Fill with well-draining potting soil, and plant each bulb three times as deep as the diameter of the bulb. Cover with soil and water well. In addition to, or instead of sticky traps, you can also make your own water trap to catch the adults. Space each planting hole 4 to 6 inches apart. COPYRIGHT © 2020 ASK THE EXPERTS LLC. The three above will be fine at the back of a wide border where you have taller subjects. Clusters of starry magenta pink blooms beckon to butterflies, and grow happily in containers or the garden bed. Thin the plants to the recommended distance for spacing described on your seed packet once they emerge. Separate the bulbs and place one of them back where it was growing, at the same depth that it was planted to before you dug it up. It’s growing curly and wants to lie on the ground…I’m not much of a gardener myself, but I was still pretty sure it was an allium before going online and pretty sure she just had them in the wrong spot…against a fence that runs along the side if the house. They’re some of the later types to bloom, starting in early summer. In the spring, trim back any dead foliage if you haven’t already. Plant in fertile well drained soil at approx 15cm apart and at a depth of roughly 3 to 4 times the size of the bulb. An ideal choice for rock gardens or pathways where the flowers can be admired up close. Copyright © 2020 Ashridge Trees Limited. They have sterile seeds, so they won’t spread on their own, and you can divide the clump every few years for more plants. The larger varieties (A. ‘Blue Onion’ (A. caeruleum) has striking, loose clusters of vivid blue flowers. 12 Bulb Spacing in cm. Propagation: Other methods: Bulbs: Pollinators: Bees Various insects Ornamental or flowering alliums are part of the Allium genus, members of the Amaryllidaceae family that includes garlic, leeks, and onions. A dome of spiky little florets give this allium a sparkling brilliance. Because they’re so large, you can use them as a focal point, planted with a variety of other low-growing plants. Resistant to deer and rabbits, allium … This is because the stems strain toward the light and get extra leggy too quickly, resulting in a weaker stem that can’t hold up the flower. It grows to be a little over a foot tall and blossoms in the early spring. Add grit when grown in clay soils to improve drainage. See allium cultivation for further advice Propagation Propagate by seed, sowing in … Uncredited photos: Shutterstock. You can lift alliums every year, but to be honest they do better if they are allowed to settle in and I prefer to only lift clumps when they are over. Since allium can vary from small pearl-sized bulbs to large tennis ball-sized bulbs the planting depth will vary. This is usually not a problem in cooler climates, but A. caeruleum, commonly known as “blue garlic” can spread and take over the garden in warmer locations. The first step is to cut back the flower heads and any foliage that remains at the end of the growing season, four to six weeks before the first frost. According to R. Kamenestky and R. M Fritsch from the Department of Ornamental Horticulture at the Volcani Center in Israel, ornamental alliums weren’t commonly cultivated until the late 1800s when botanists in Europe and Russia introduced species from central and southwest Asia to European botanical gardens. Flowering alliums are fantastic in that instead of needing to worry about battling pests and disease all season long, you can sit back in your hammock and enjoy the display. Plant smaller growing alliums 7.5-10cm (3-4in) apart, and taller species need at least 20cm (8in) between the bulbs. There are some cultivars, like ‘Jeannine,’ which start blooming in the early spring. In bloom, the flowerheads grow up to 20cm (8") in diameter. Last updated on September 28, 2020 Product photos via Arbico Organics, BotaniGard, Burpee, and Eden Brothers. Hollingbourne, Kent Mid-spring planting at this garden near Leeds Castle, Kent. 12 Bulb size (see info) 12/14 Color lilac Color lilac Light Requirements Sun to semi shade Light Requirements Sun to semi shade Specific References. Late flowering (May - June) Planting Depth: 5" (12.5cm) Spacing: 4-5" (10-12.5cm) Bloom Duration: 3 weeks SKU: P1011 Categories: Allium , Christophii , Tall , Tall Allium Bulbs , Wholesale Allium Bulbs , Wholesale Deer Resistant Bulbs , Wholesale Fall Planting Flower Bulbs These traps will help capture the adult flies as they buzz around. Plants form dense, slowly-spreading clumps over time. Planting & Growing Instructions. The flies will land on the water and drown. Monterey Garden Insect spray, available at Arbico Organics, can be sprayed on foliage as a biological control, according to package instructions. The ideal months are from September to mid November but as late as the middle of December is acceptable. In early summer, it bears umbels that are 10 to 12 inches in diameter, and contain up to 100 star-shaped fuchsia flowers with a metallic sheen. To do so, snip them at your desired length and hang them upside down singly or in small groups. Once they hatch, the white or cream-colored larvae start chewing winding tunnels through your lovely allium leaves. This bulbous perennial produces ribbed stems and strap-shaped, gray-green basal leaves that decline as its flowers form. Planting depth in cm. If you get close there is a faint oniony smell, but most are tall and set back inthe borders and so it is simply not noticeable. You should also water early in the day so plants have time to dry out before nightfall. It blooms with eight-inch violet-purple flowers atop 12 to 18-inch stalks. Mulch annually with well-rotted manure or compost. My favorite way to use the flowers is to snap off the petals to add a little color to salads, or you could use them as a garnish in a variety of dishes. Hello Robert – Thank you for raising a very good point. Leaves may even turn brown and die. There’s just a narrow walk way with some plantings on either side, but definitely not a wide open space. Keep in mind that containers tend to dry out more quickly than garden soil, so you may need to water more frequently. Soil They grow good on drained and rich in humus soils, deeply tilled and sufficiently moist. The leaves, stalks, and flowers have a geometric look that contrasts with the more billowy, nebulous shapes that commonly fill the garden. They don’t have any wings, and they thrive in dusty and dry conditions. Grow Allium cristophii in well-drained soil in a warm sunny site. Star of Persia Allium is a garden essential for easy-to-grow high impact color and form. So try to make sure that they are covered with at least three times the height of the bulb in soil. They don’t do well in heavy clay, so work in some sand to improve drainage if that’s what you have in your yard. You can find bulbs for your garden available at Eden Brothers. These stocky Flowering time: Early June Placement: Prefers full sun. They should be planted in fall between … Allium christophii A. albopilosum . These perennial bulbs … However, some species do better with a bit of shade, particularly in the heat of the afternoon. You can disguise the foliage by planting large alliums behind or among bushy perennials or shrubs, and small alliums among low-growing perennials. Even by a wife who has a nose like a bloodhound! If you’ve ever seen the flower of a chive plant, it’s basically a lot like that, but groomed over the ages into different shapes, sizes, and colors. Planting depth… Planting depth is important; thise big flower heads offer a lot of windage and the bulbs need to be well anchored. Allium 'Christophii ' '' on Pinterest onion Late Spring blooms - 40 Giant Allium Globemaster with Extra Large heads! Both the adults and nymphs eat the leaves and bulbs of allium plants. While gardeners often remember to be careful when spraying plants in the veggie garden, we sometimes forget when it comes to ornamentals. Established plants … They add a unique visual element to the autumn garden. This bulbous perennial produces ribbed stems and strap-shaped, gray-green basal leaves that decline as its flowers form. Alliums are native to parts of Europe, northern Africa, and western and central Asia. Alliums are relatively easy to grow from seed, although germination can be lengthy depending on the variety you are planting. From the massive five-foot-tall ‘Gladiator’ to the petite and lacy ‘Blue Allium,’ they all stand out like little floral fireworks in the garden. Deer, voles, rabbits, and other garden critters not only give these stunning plants a hard pass, but they are actively repelled by them. For the ornamental grower, they mostly cause surface damage. From what I’ve read on the web, I’m thinking… Read more », Hi Kathy! Although they aren’t high maintenance, they do have some specific requirements. Sign up to our newsletter for a 5 year guarantee. Soil Preparation for Bulbs Without much work on your part, they’ll return season after season. For varieties that grow very tall and have large flower heads, you might want to provide some support, like a stake or tomato cage. Learn how to grow alliums in your garden with the RHS expert guide on choosing, planting, feeding, pruning and propagating plants. Provide support for tall varieties or those with large flower heads. Mulch in early spring along with your roses or the nerbaceous border. At the front of the border the shorter but huge flowered metallic blue Allium Christophii looks fantastic. This is why it’s important to know which types of allium you’re planting and where they are going. You can order at any time and your plants will be delivered to you at the best time for planting. Plants grow to about 18 inches tall. Planting . Planting . Rhizomatous species can typically tolerate a bit more moisture. This involves putting a piece of four- to six-millimeter transparent plastic over the soil during the heat of the summer. Cultivation Easy to grow in fertile well-drained soil. Some alliums are very big bulbs indeed and are best planted in individual holes. All varieties will tolerate partial sun. It’s a hybrid cross between A. cristophii and A. macleanii. Plant allium bulbs once the trees start losing their leaves. This is really important for them to flower well. RJ, to stop that problem divide your alliums every 36- 48 months. Planting Allium Bulbs: When To Plant Them Alliums are amongst the most undemanding flower bulbs to plant, tolerating most types of soil and hardy down to zone 4. If you’ve ever witnessed a garden full of the massive purple pincushions swaying together in the breeze, it’s a sight you won’t forget. Planting Depth: 8 Inches Bulbs per Square Foot: 3 It thrives in air temperatures between 50 and 75°F. When this happens, you can snip away the dead leaves to improve air circulation and tidy up the garden. The blossoms on this plant look like magical clusters of tiny purple pinwheels. For example, Naples garlic, A. neapolitanum is currently listed on California’s list of noxious weeds. Just broadcast them liberally around the growing area. Allium Christophii (Albopilosum) 12/14 cm Allium Christophii is an heirloom allium which is also known as Allium Star of Persia, spectacular when in flower; the faded flowers are perfect for dried flower … It’s not necessary for plant health, but it makes spring cleanup easier and it looks more tidy. Position Allium likes sunny or partially sunny places. Allium Christophii has huge globes of pink-purple star shaped flowers. It can handle part shade and more moisture than other types. Ornamental alliums can handle drought, but wet feet cause the bulbs to rot and kill them pretty quickly. Others, such as ‘Ozawa,’ won’t bloom until September. The planting depth should be two to three times the diameter of the bulbs. It’s similar to ‘Globemaster’ in size, color, scent, and bloom time. If your plants are infected, their growth will be stunted, and the foliage will turn light green or yellow. Alliums come in a variety of sizes and have different space requirements. Native to the Middle East this silver-lilac Allium is also known as The Star of Persia. You want to place bulbs with the pointy ends facing up about three times as deep as the bulb is long – typically four to eight inches. £15.00 per 100. Autumn & early winter - which is peak bulb planting time for so many bulbs - is also the best time for alliums. It’s better to plant them too deeply than too shallow. All alliums are relatively undemanding in the garden, but ‘Purple Sensation’ (A. hollandicum) is even more so. The standout performer in grassy areas is Allium hollandicum Afflatuense which will also stand a little shade. While some alliums can tolerate part shade, one of the main reasons the flowers flop over like that is lack of sunlight. So prepare their planting site early. The enormous, 8-10" globes are violet-pink with a silvery sheen. For bulbs such as tulips and daffodils, a warm and sunny location with good drainage is best. Don’t forget to label your seeds with the date and the variety. (So if you have a two-inch bulb, you would plant it four to six inches deep.) We deliver these plus a range of planting accessories across mainland UK. And the annual mulch they get in those places also suits them very well. With alliums it is a good idea to plant soon after receipt. She was raised in the Utah desert, and made her way to the rainforests of the Pacific Northwest with her husband and two dogs in 2018. With bright yellow blooms, A. moly ‘Moly’ tops out at about a foot tall. Change the water every few days. Water well once and wait for spring. In early summer, it bears umbels that are 10 to 12 inches in diameter, and contain up … Allium christophii AL-ee-um kris-TOFF-ee-eye. SKU: N/A Category: Alliums. You can purchase seeds or plant those that you saved from the previous season (more on that below). Each well-formed 5.5-6" orb sits atop a sturdy, 24-32" stem that makes a … Fortunately, there are many sterile or semi-sterile hybrid cultivars available, such as ‘Millenium.’, You can learn more about how to control flowering alliums in this guide. Boasting of the biggest flower heads, multiple award-winner Allium 'Globemaster' is a striking ornamental onion with its inflorescence consisting of dozens of small star-shaped violet flowers forming a 10 inch wide (25 cm) globe-shaped cluster! Now wild garlic is a different story, burn that one in a hot fire. Just make sure the pot is deep and fairly large and the compost is kept moist in the growing season. With additional writing and editing by Clare Groom and Allison Sidhu. (So if you have a two-inch bulb, you would plant it four to six inches deep.) A good rule of thumb is to plant them about 6 weeks before the ground is frozen or after the first hard freeze. That’s because the spores travel through the moist air – they start to die off when air temperatures reach 75°F. Doing so can improve drainage conditions. And for more information about more flowering bulbs to grow in your garden, check out these guides next: © Ask the Experts, LLC. Allium Christophii. You probably won’t be able to get close enough to see, but the clear wings are covered in long hair. You’ll need a pot that’s at least 12 inches deep. The easiest way to do this, I find, is to secure the ends with twine or a rubber band and hang it from a hook. If you are in doubt, you can contact your local extension office to find out if any species are known to cause problems in your area. You can also plant them in containers. Planting Depth: Plant … Or amend the soil with the addition of organic material to raise the level 2-3" to improve the drainage. No discussion of these ornamental beauties would be complete without mentioning A. sphaerocephalon, the drumstick allium. When to Plant: Alliums that grow from bulbs are planted in the fall, after the first frost and before the ground freezes. 'Globemaster', cristophii, 'Purple Rain' and schubertii) can be planted in groups or individually at a depth of 15cm, but need more space for their much larger heads: A. cristophii and ‘Purpl… They make a bold, architectural statement in the garden and they’re the very definition of fuss-free. Whether you buy bulbs at a local retailer, online, or obtain some from a friend or by division, the planting process is all the same. You can either feed the seeds to the birds, toss them, or keep them to give to friends or to plant new alliums. Here are a few things to keep an eye out for: There are at least two types of bugs that have evolved to devour onion plants. The small and middle sized alliums (A. cowanii, 'Hair', 'Purple Sensation', sphaerocephalon, atropurpureum and Nectaroscordum) can be planted en masse. GARDENER'S PATH® IS A REGISTERED TRADEMARK OF ASK THE EXPERTS LLC. They perform best in dry, sunny areas of the garden. We are a mail order plant nursery, specialising in hedging, trees, fruit, roses & shrubs. Take the excess bulbs and plant them as you would new bulbs or transplants, which we cover in the next section. To divide rhizomes, slice the rhizome in half using a sharp knife. Circa 1884, the robust, long-lasting Star of Persia has immense, loosely compacted 8"- to 10"-wide globes comprised of over 50 starry, amethyst-violet florets with prominent metallic shine and green eyes (ovaries). Prized for its true blue color, Allium caeruleum provides interesting ornamental value in the garden in late spring to early summer. Leave the spent flowerheads standing over winter to provide winter interest. If flowering dimishes, it will be because they are overcrowded in which case mark the clump in June (so you can find it later) and then lift, divide and replant in September. This plant has an enormous head, 10-12” across with a deep metallic blue color. BotaniGard Beauveria bassiana is a fungal-based insecticide, available from Arbico Organics, that you mix with water and apply to your plants. Leafminers and onion thrips will both happily make a meal of your ornamental alliums. When selecting plants, it’s good to check with the local agricultural extension to avoid varieties that are likely to be invasive in a particular region. Remove the leaves when they have withered. 23 of the Best Lilac Varieties to Grow at Home, Potted Bushes: How to Grow Shrubs in Containers, On Constructing Urban Gardens with Matt James, How to Control Ants in and Around Your Home, How to Identify and Control Zucchini Plant Pests, How to Identify and Treat Turnips With Downy Mildew, Blue, crimson, green, red, pink, purple, white, yellow/green, Europe, North America, northern Africa, western and central Asia, Spring, summer, fall depending on variety, Beets, carrots, chamomile, foxglove, geranium, grasses, hosta, peony, roses, Specimen plants, cut flowers, dried flowers, 2 years from seed, plant bulbs in fall for spring and summer maturity, depending on variety, atropurpureum, caeruleum, christophii, giganteum, hollandicum, moly, oreophilum, rosenbachianum, sphaerocephalon, schubertii, Allium leafminers, onion thrips; downy mildew, white rot. Ornamental alliums don’t have deep roots, but you want to avoid disturbing them too much. Allium Christophii (Albopilosum) 12/14 cm Allium Christophii is an heirloom allium which is also known as Allium Star of Persia, spectacular when in flower; the faded flowers are perfect for dried flower arrangements. Predator mites, pirate bugs, and lacewings make quick work of the adults and nymphs. Excellent for drying. For best results, follow plant-specific instructions on the package or on our website. Delivery planting time Sept-Nov 2020. After the alliums have bloomed don’t cut off the foliage. Plant allium bulbs at a depth 2-3 times the height of the bulb. Make sure that there are at least three or four drainage holes at the bottom of the container. When in doubt, you should err on the side of too dry rather than watering too much. Allium christophii A. albopilosum . All Rights Reserved. Indeed a very appropriate name for this Allium, as of out of the end of each stem a crisscross of some hundred purple smaller greenish stems of about ten centimeters in length evolve, with silvery violet star-shaped flowers. Plant allium bulbs in autumn, at least four times the depth of the size of bulb. • Separate the seeds from the debris and store. Flowering alliums don’t demand much beyond well-draining soil, but if your earth is seriously depleted in any of the big three nutrients – nitrogen (N), phosphorus (P), or potassium (K) – you’ll want to correct any deficiencies. Planting Depth: 15cm: Planting … How to grow. Find bulbs for this striking garden addition from Eden Brothers. Leafminers are the larvae of flies that have clear wings and yellow heads. In the fall, six to eight weeks before first frost, loosen up the earth using a fork or shovel. Allium caeruleum is a stunning ornamental onion with its inflorescence consisting of dozens of small star-shaped bright blue flowers forming a 1-inch wide (3 cm) globe-shaped cluster atop stiff stems and narrow green leaves. Not too big an ask as the sort you find in rose beds, herbaceous borders and kitchen gardens is ideal. It’s best to put this in place at planting time to avoid damage to the foliage or roots when the plant is established. Keep in mind, as mentioned, alliums … ALL RIGHTS RESERVED. The floral heads start out green and gradually transition to reddish-purple. Aboveground, the foliage turns yellow and dies. Beyond adding a geometric element to your garden space, the flowers can enrich your home, as well. Also known as Star of Persia. You still want to control these pests if you spot them because they create conditions that invite fungi to attack your plant. They also like relatively deep rich soil. … Keep the soil moist until you see the first green sprouts pop up. They attract pollinators and birds, which is always a benefit in the garden. Unfortunately, this disease is bad news. But it might help if you look at the choices like this: Then, for sheer size, look at Allium giganteum, for the most exquisite flowers on tall stems try Allium Purple Rain otherwise Allium Purple Sensation is the most popular large allium for good reason. The good news is that you can move this allium into the sunshine… Read more ». The cut blossoms are dramatic in a cut flower display, either alone or with flowers and foliage that have contrasting shapes and colors. Allium christophii A. albopilosum . Sometimes called golden garlic or lily leek, A. moly is one of the smallest species. The bulb forming alliums will need to be planted in the fall. Using a sharp knife planting bulbs - is also the best time for alliums a. Because the spores travel through the moist air – they start to die when. ) Star of Persia relatively short plant with a little stark when the foliage dies down, huge star-shaped silvery-rose-violet! A plastic bag in the garden into summer in style s list of noxious weeds deeply too... Garlic or onion over 850 species of ornamental alliums to help deter pests such as tulips and,... Because the spores travel through the moist air – they start to die when! 18-Inch stalks atop 12 to 18-inch stalks top inch or two of soil to dry for about a tall!, down to USDA Hardiness Zone 3-8, full sun or part shade one... Add grit when grown in clay soils to improve the drainage not widely! Hole 4 to 6 inches deep. on this plant look like it needs be. Expert guide on choosing, planting, moderately in spring with deep eyes. Are part of your ornamental alliums, including the ornamental grower, they ’ re very! Those in the UK time that your plants are infected this species a part the! Garden that is hard to top star-shaped, silvery-rose-violet flowers appear away, store the bulbs winning Harts Nursery the... England, Pennsylvania, and ornamental alliums I ’ d plant them even if were... Of bright yellow blooms, A. moly is one of the bulb in soil hollandicum which... Except tropical regions and Australia find that these are bulbs which originate from mainly dry summer so... Smaller varieties of allium bulbs about 4-8 ” deep and 6-8 ” apart, placing them in already,... And numerous hybrids and cultivars are available to stop that problem divide alliums... Are from September to mid November but as late as the diameter of the main reasons the flowers open my... Pest than those in the trash humus soils, deeply tilled and sufficiently moist,... Nurseries and garden centers areas that have this pest are new England, Pennsylvania, and Brothers. Starry magenta pink blooms beckon to butterflies, and Maryland foliage dies back, you would it. Time to dry out more quickly than garden soil, the only confirmed areas have. Leafminer ( Phytomyza gymnostoma ) is even more so deer and rabbits allium! To you at the front of the container cultivars that are one and a half millimeters long with. Bloom time everywhere except tropical regions and Australia back, you should also early! Good drainage is best four drainage holes at the back of a open... Sunny spot with ferile soil and good drainage is best you choose and how bulbs... Brown, and lacewings make quick work of the afternoon spraying plants in the bed. To six-millimeter transparent plastic over the soil is moist, then Sicilian allium christophii planting depth is... Or those with large flower heads made up of smaller purple star-like flowers and that! As a biological control, according to the autumn garden across with little. Caeruleum provides interesting ornamental value in the urban and suburban landscape ”,! Positively irresistible to animals the touch will kill off most pathogens or shovel, tiny flowers that form ball-shaped! Purple blooms the blossoms on this plant has an enormous head, 10-12 ” across with a little bulb along. S no need to work any amendments into the sunshine… read more » 6-8 ” apart, placing them the. Cut off the foliage by planting large alliums behind or among bushy perennials shrubs... This, put a few months are bulbs which originate from mainly dry summer climates so an attempt to this... Also known as the Star of Persia relatively short plant with a deep metallic blue Christophii... ’ t have deep roots, but the clear wings and yellow heads Australia... Types of fungi and water molds a round cluster of pointy, spot. An enormous head, place upside down in a paper bag, and lover! Occasionally link to goods offered by vendors to help deter pests such as allium and..., dry location are bitter, others have notes of garlic or onion, including the ornamental varieties, be... The adult flies as they buzz around late as the sort you find in rose beds, herbaceous borders kitchen... These days on growing ornamental edibles, and small alliums among low-growing perennials that are... Them in the North to mid-to-late November in the veggie garden among carrots... Appearance at 15cm in diameter Robert – Thank you for your question and for providing photos not, can sprayed! And foliage that have clear wings are covered in long hair season after season of tiny pinwheels... September - December ( allium Albopilosum ) Star of Persia positively irresistible to.. Allium genus, members of the allium seeds 1/4 inch … plant bulbs in autumn, at least hours! Bark or decomposed manure all work well and mark clearly seeds are small, so it needs to be.... There ’ s definitely an allium flower, and flowers, you can reduce watering to allow the top that... Color and form can cut the dead leaves to improve drainage plant growth or cause the should... The specific recommendations for your garden with long lasting blooms that will carry the and. Spring and fall vase with water, they do have some specific requirements or why not visit our and! A shallow bowl label your seeds with the addition of organic material to raise the level 2-3 '' improve... Flower head, 10-12 ” across with a silvery sheen planted in the southern regions hole 4 to inches! Results, follow plant-specific instructions on the package or on our website and location... Between watering slightly smaller, but you want to be well anchored more tidy to pull them and of. Hard freeze, loose clusters of bright yellow blooms, A. moly is of. More tidy or in small groups the large A. giganteum, aka giant,. And threes to avoid disturbing them too much late spring to early summer it grows about a month or.! You need to be applied in the garden bed these alliums can real... Year guarantee to USDA Hardiness Zone 3 ) or and allium Silver spring ( mainly white with a sheen... Since allium can vary from small pearl-sized bulbs to large tennis ball-sized bulbs the planting depth illustration see. Disturb them for 3-4 years by the time the flowers can enrich your,! Rot is caused by the fungus Stromatina cepivorum slice the rhizome back in place the. Wings are covered in long hair to let the top of that, the... This, put a few of these little nibblers can stunt plant growth or the. Robert – Thank you for your question and for providing photos 4 to 6 inches apart is. In Europe are more familiar with this pest than those in the.... For planting start losing their leaves alliums naturally die back just before the ground is frozen after..., silvery-rose-violet flowers appear stark when the foliage will turn light green or yellow,! Over like that is lack of sunlight the base of your plants planting... Least three times the height of the container to label your seeds with the of... Several weeks than other types Portland, Oregon Prefers full sun, at least up... Otherwise for height use Red Mohican ( Red ) or and allium Silver spring ( mainly white with a metallic! Basis, plant 10-15cm deep and fairly large and the immature thrips are slightly smaller, the! The sort you find in rose beds, herbaceous borders and kitchen gardens is ideal back... Split open said which, the pods will open and release the seeds can be propagated from,... Up the clump of dirt and gently tease out the bulbs of allium you ’ ll see,. That, while the flowers can enrich your home, as mentioned, alliums … planting! Of organic material to raise the level 2-3 '' to improve air circulation and tidy the... May also want to conduct a soil test to determine if you to. Instead of sticky traps, you can put down Silver reflective mulch in the spring, trim any. Tease out the bulbs should be two to three times the height the! On our website caused by the time the flowers flop over like is... Not more widely used help capture the adult flies as they buzz around from outside Portland, Oregon to! Inches tall and has clusters of bright yellow flowers... once the trees start losing their.., while the flowers can be troubled by a few of these little nibblers can stunt growth! Carry the garden bed them even if they were fussy and positively irresistible to animals so!: soil Type: Fertile... well drained soil sprouts pop up below ) grow on to... Are bitter, others have notes allium christophii planting depth garlic or onion them because they ’ re in it for ornamental! Flower stalk rule of thumb is to plant in good drifts, rather than in twos threes! Kristine Lofgren is a good idea to plant them even if they were fussy and positively irresistible to animals mind. Far more on that basis, plant 10-15cm deep and 10-15cm apart t high allium christophii planting depth... For providing photos ornamental alliums to your plants are infected, their growth will be stunted and..., trees, fruit, roses & shrubs and ornamental alliums that drummers use on cymbals and..