By planting fall bulbs for spring blooms, we are already thinking ahead for the garden of the next year. Alliums are among our favorite bulbs to plant in the fall because they promise to produce enormous, eye-catching flowers. Because of their extraordinary height, they can be used in formal or casual gardens as well as naturalized landscapes. They are whimsical yet dignified. Additionally incredibly adaptable and durable, alliums are perfect for year-round decorative use. Continue reading for our instructions to growing, drying, and using these garden giants as decorations.
Planting Select a planting place with well-drained soil and full sun as soon as the leaves start to fall. This will help your alliums grow stronger stems. These huge bulbs, which can rot if exposed to too much moisture, require good soil drainage. For each bulb, dig a hole that is 2-3 times as deep as the bulb’s height, measured from the bottom of the bulb. Place the bulb in the ground with the pointed end facing up, completely cover it with dirt, and give it a good watering to help it settle. If you’re planting several bulbs, make the holes about 6 to 8″ apart. In the fall and winter, roots will begin to grow, and in the spring, leaves and flowers will appear.
Find a spot for alliums where they may tower over other plants without getting blown over by the wind. The majority of allium stems are robust and sturdy, but as they get older, they might break and become untidy. Never allow the stake extend past the ball if you decide to stake an allium as it grows. Alliums can benefit from having mounding plants around them, such as hardy geranium and nepeta, to help hide the leaves as it turns yellow later in the season.
Drying The majority of allium cultivars bloom in the late spring and early summer, but if they are left in situ, they can keep the garden going into the fall and even the winter, becoming a tawny gold. Their pointed seedheads, however, can also be carried inside and dried for ornamental purposes. Pick a drying location first when you’re prepared to take your alliums from the garden. A pantry or closet may be the best location because they are cool, dark, have good ventilation, and have low moisture levels. To suspend the allium stems, run a taut strand of twine or wire across the area.
When the seedheads are fully developed and dry, harvest them, leaving the stems intact. Make bundles of two or three stems using rubber bands after trimming any extra leaves. Your alliums can be suspended separately if they are quite large. The seedheads should dry for three to six weeks after you attach the bundles to your drying line (we like to use an unfolded paperclip for this).
Decorating Once dried, seedheads make amusing embellishments for both the home and yard. When placed within a glass cloche with other preserved flora, they develop into a natural collection. Tall stems provide new plantings, like a hanging basket or a barrel of autumn grasses, architectural interest. We’ll also add dried alliums to wreaths and evergreen trees as the holidays get near for a botanical Christmas.
How are allium seed heads preserved?
I have an obsession with ornamental alliums. I keep growing more of them even though I now have around a dozen distinct varieties in my garden. Alliums are not only stunning to look at, but they are also long-blooming, pollinator-friendly, and appear to be immune to disease and pests, even deer.
And if that’s not enough, alliums’ seed heads are yet another reason to adore them. The seed heads of these late spring/early summer flowers can be an equally alluring lure after they have faded. They provide unique forms and textures to the yard and summer flower arrangements and many of them will survive for months. Continue reading to discover how to maximize the use of these eye-catching seed heads.
Use Allium Seed Heads in Fresh Arrangements
While they are still green, the seed heads can be clipped and added to bouquets of fresh flowers. Homegrown bouquets are given a distinct glitter by their color, shape, and texture. For this, Allium Purple Sensation works best.
Leave Seed Heads Right in the Garden
The seed heads can be left in the garden, where people will continue to be intrigued by their unique textures and shapes. The Globemaster and Gladiator alliums, which have sturdy, robust stems, are the ones that I find last the longest. Allium Christophiii’s seed heads, however, also persist for a long time. They may continue to look nice into August in a dry summer.
Paint the Dried Seed Heads
Another choice is to paint the seed heads once they have completely dried. Last year, I dried some Gladiator seed heads and used gold spray paint to embellish them. They emerged with a little bronzer appearance than gold. I might attempt silver paint this year.
The dried seed heads have also been painted glossy white and utilized as wedding decorations by me. The Gladiators are those displayed below.
Here’s a way for drying allium seed heads so you can paint them or just display them inside. When the seed heads are dry but before the seed capsules start to open and release the seeds, they should be painted or treated with a clear fixative. You can maintain the starburst effect and reduce the amount of seeds you need to sweep up by placing the seeds inside the capsules at the end of each “stem.”
The enlarged seed capsules are visible in the photo below, even though the seed head is not yet dry enough to paint.
Visit this post on Gardenista to see some lovely dried alliums (Allium schubertii) hanging from the rafters of an old stone barn in Wiltshire, England.
Mid- to late-fall is the ideal time to plant decorative alliums. Orders are accepted starting in May, and bulbs are shipped from early September through mid-November. The only way to guarantee you’ll get the variety you desire is to place your order early. Our entire collection is available to view HERE.
Can you dry allium flowers?
The allium (Allium giganteum) is guaranteed to stand tall in your garden and thrive in USDA zones 3 to 8. Additionally, you can dry the blossoms for use in a variety of creative and decorative projects. Each type has a particular appearance.
Alliums can be multiplied from seed heads.
After the foliage and blooms have faded, you can lift, divide, and replant clumps of older plants if they are getting too crowded.
There are numerous allium species that generate offsets, or young plants. You can lift the bulbs and separate the offsets when flowering is over and the leaves have stopped growing. Either directly plant them in their ultimate locations, or let them grow outdoors in pots with grittier compost.
Some alliums (including Allium roseum, Allium sphaerocephalon, and Allium vineale) generate aerial bulbils in the flower head instead of flowers. These bulbils can be delicately taken out and divided. Planting the bulbils in wet, well-draining compost that is spaced 2.5 cm (1 in) apart and covered with a 1 cm (3/8 in) layer of compost is possible. They will not achieve blossoming size for a few of years.
Alliums can be propagated by seed, however hybrids won’t ‘come true’ (i.e., they can differ in color and shape from the parents) with this technique. Ripe seeds should be sown as soon as possible. Put the seeds into grit-filled compost trays and top with 5 mm of grit. Put the containers in a shaded area of the yard. Alternately, keep seeds chilled and plant them in the spring at about 13C. (55F). Most seeds ought to germinate in about a month. It will grow to flowering size over a number of years.
Can allium seeds be preserved?
Excellent bulb plants for perennial gardens are ornamental alliums. They are attractive onions, which come in a variety of species and cultivars.
Their sizes range from the smaller “Allium sphaerocephalon, a smaller allium, to Allium giganteum, a larger allium.
The majority of people grow alliums from bulbs since it is relatively simple to do so.
However, you can also start new plants from seeds if you are raising alliums that produce seeds. Increasing the number of allium plants in your garden is simple and affordable.
However, not all attractive allium plants will, and some will only produce a small amount.
A few varieties of allium are sterile and won’t set seed. In the case of cultivars like Allium “Globe Master” and Allium “Mount Everest,” this is true.
Some cultivars, like Allium, produce a lot of seeds “Allium christophii, also known as the Star of Persia, and Purple Sensation
The seeds from alliums that produce seeds can be kept, planted, and grow to produce more allium seedlings for the garden.
Is It Worth Growing Alliums From Seed?
Growing alliums from seed is absolutely worthwhile if you want to enhance your allium supply.
Remember that some allium bulbs, particularly the larger types, can be rather expensive.
Therefore, gathering some allium seed will ultimately save you money if you have a larger cultivar that produces seed and wish to grow your allium stock.
It’s crucial to understand that hybrids won’t be true to the parent plant, and that the new seedlings may have differences in size, form, and color.
How should allium heads be handled after flowering?
Post-bloom maintenance for alliums is quite simple. Simply continue to water the plants sparingly until they start to shrivel and turn yellow. At this point, you have the option of either dividing the plants or cutting them all the way to the ground.
Divide allium bulbs every three to four years. Simply use a shovel to dig around the plant and lift the bulbs out. You should see a group of bulbs that you may gently separate with your hands. Replant a few in the same location, and immediately transplant the others to different sites.
It’s considerably simpler to take care of allium bulbs that you don’t wish to divide. When the foliage starts to fade, simply trim it back, and in the fall, mulch the soil with 2 to 3 inches (5-7.5 cm) of material. In the spring, remove the mulch to allow room for fresh growth.
Can I grow allium plants from seeds?
Alliums are magnificent plants, therefore it’s worthwhile to save a few seeds to plant in the spring to increase the number for the garden.
It’s fascinating to grow cultivars and see what you get even though the seeds won’t be true to type. The seeds will sprout swiftly and mature into flowers in a few years. To obtain the finest show, when planting, pick a place that is protected, sunny, and has excellent drainage.
Try tapping the seeds directly into a paper bag if you want to keep the seedheads in the garden for winter interest. The cut seedheads could potentially be used again in indoor arrangements.
When should allium seeds be sown?
More than any other garden crop, starting alliums from seed gets me enthusiastic. They announce the end of winter, which by February is the only story I want to hear. They are a brilliant green sign of spring.
The earliest seeds that can be grown indoors belong to this plant family, which also includes leeks, chives, garlic chives, onions, scallions, and many more less well-known species. In the Northeast, onions and leeks transplant best from February 1 through March 10 and produce the largest bulbs and shanks (but I’ve had outstanding crops from mid-March sowings and passable harvests from late-March to early-April direct sowings). More tolerant of starting times are scallions, chives, and garlic chives. Scallions in particular benefit from succession sowings in the spring and summer.
Allium seeds can be easily sown. The deeper the tray, the better. Fill it with potting soil that has been supplemented with compost. Then, create and firm down furrows along the length of the tray that are approximately 2″ apart. In these furrows, scatter the seeds thickly at a rate of 6 per inch. A different technique for growing onions and scallions is to fill six-packs with enriched potting soil, moisten it, and then make a dibble in the middle of each cell that is a quarter-inch deep. Each dibble should contain 6-8 onion seeds or 12–15 scallion seeds before being filled with potting soil. (This latter approach has the benefit that transplanting is simple. Simply extract the entire plug and transplant it after thinning the cells to 3-5 plants apiece. They will happily reach their full size in a clump that is simple to weed around if you place them in the bed about 12″ apart.)
At room temperature, alliums germinate most well. As long as you start them early enough, you should be able to wait the 7–10 days it takes for them to emerge at room temperature even if they pop a little faster with heat because the germ rate actually decreases. Unlike other seedlings, they prefer to be kept moist and grow most robustly when their feet are nearly continually wet. Rather tragically, these wet conditions also contribute to damping off, the primary issue that onion seedlings experience. Compared to almost any other seedling, onions are more susceptible to damping off and other fungal diseases. Growing onions indoors at room temperature in nicely moist soil with regular air flow is optimal. A little fan works wonders for this. As with other seedlings, make sure there is enough light available.
Alliums are typically advised to develop until they are pencil-thick before being transplanted. However, it is difficult to accomplish this by transplant time, which is roughly 6 weeks before the final frost, even with an early- to mid-February start date (early- to mid-April here in upstate New York). I believe that aiming for seedlings with a diameter of between 1/8 and 1/4 inch is a more practical objective. These size seedlings are simple to nurture, transplant well, and begin to grow within a day or two. They provide large onions, thick leeks, and quickly growing scallions. The wiry, thin seedlings are frequently successful; they are not useless. But before starting to grow again, they may waste days or even weeks appearing to be nearly lifeless. Tip: Start your seeds in a very deep tray—say, six to eight inches—if you want particularly thick seedlings. Some growers accomplish this using a window box.
The most challenging aspect of growing alliums from seed is locating the ingredients for quality potting soil in the bitter cold of winter. There are several closed garden centers. Most likely, your personal compost pile is frozen. And even though the outside garden centers at big-box home stores are typically open all winter, they are typically only selling off their remaining inventory from the previous season and frequently lack essential components. Your best option is definitely to purchase organic potting soil from a reputable garden center’s indoor section, but by all means, add some compost, organic fertilizer, or perhaps both. Alliums are nutrient-demanding plants that require fertile soil for the best results; mixtures supplied in tiny bags for houseplants and similar plants typically have insufficient nourishment.