A: I have some alliums that I would like to relocate to a bed of other alliums that are flourishing outside. Do I have to wait until September to do that, or can I do it now?
A: Alliums are summer-dormant bulbs that blossom late in the spring. These can be moved, and the best time to do it is just as they start to fall dormant after finishing their blooming cycle.
I’d hold off at least until the leaves begin to turn yellow. That indicates that the majority of the bulb’s “recharging” is complete. The foliage’s function is to absorb sunlight and create the plant sugars that the bulb stores to grow and bloom the following year using water and chlorophyll. If you remove the foliage too soon, this recharge will be interrupted.
The drawback of waiting until fall is that you won’t be able to pinpoint the location of the bulbs. The foliage will have withered and become brown at that point. You could therefore mistakenly dig into the bulb and kill it if you don’t label the location.
You can find the bulbs by digging just before the foliage entirely turns brown. Dig up the entire bulb and plant it again right away in the new site at the same depth (preferably, around two and a half times as deep as the bulb’s length). Before transplanting, remove the foliage. No immediate requirement for fertilizer or irrigation.
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When should allium bulbs be dug up and replanted?
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.
When can allium bulbs be split?
Under ideal conditions for growth, enormous allium bulbs will proliferate quickly, which can cause overcrowding and a loss of vigor. Fewer or smaller blooms may suggest that a bunch of established gigantic alliums needs to be divided sooner even though it usually takes several years for the bulbs to grow congested.
Alliums can be moved in the spring. The best time to raise and divide the bulbs is in late summer, when the ground has dried up and the leaves and flower stalks have entirely withered away. When the smaller, newly formed bulbs are ready, remove them and plant them in nursery pots or in a different bed.
Can bulbs be moved while they are still growing?
Yes, you may wait until the end of the growing season in the fall or the beginning of the spring to move misplaced perennials and bulbs. Why then wait? While they are in bud or even in bloom, many perennials, anything with fibrous roots, and practically any bulb can be moved.
If possible, transplant on an overcast day for the best results to prevent the plant from losing moisture from its leaves to the sun. If the weather can’t wait, transplant in the late afternoon. Down this manner, the plant won’t be stressed out by a day of sun and may start settling in.
The most essential component for creating by shovel is obviously something you already have—water. No matter how carefully you dig, you’ll still cut through some roots because those are what supply the plant with water. The plant won’t be able to get enough water to prevent wilting until they get comfortable in their new location. The answer? Every step of the route is watered.
How are alliums used after they have flowered?
The foliage of the allium often appears at least a month before the flowers do. Some species’ foliage starts to turn yellow and die off before the flowers are fully open. Plant the bulbs with other plants that will obscure the wilting foliage to help mask it. Alliums do well with hosta, astilbe, and perennial geranium.
When your alliums are blooming, you may anticipate seeing a lot of pollinators. Any type of habitat garden will benefit greatly from the inclusion of these bulbs.
Like their relatives in the vegetable garden, alliums hardly ever have insect or disease problems. Rarely do bothersome rats and deer show any interest.
Most alliums are perennial plants. They will typically bloom again if the species you are planting is winter hardy and the bulbs are suitable to the growing environment in your yard.
Caring for Alliums After They Flower
Allium wasted flower heads can be removed or left in situ once flowering is over. The seed heads are viewed as an intriguing decorative element by many gardeners. Depending on your environment, they may persist far into the beginning of the fall.
Large-headed alliums like Schubertii and Globemaster hardly ever produce viable seeds. Purple Sensation and drumstick alliums will reseed if the conditions are favorable. Simply remove the seed heads after the flowers have faded and before the seeds develop to prevent a carpet of tiny volunteers.
There are herbaceous alliums as well as alliums that grow from bulbs, including varieties like Millennium and Summer Beauty. These plants have a big root system and come back every year to blossom.
Alliums that emerge from bulbs require their foliage in order to generate energy for the blossoms of the next year. Therefore, it’s crucial to let these plants die back organically. The leaves may typically be removed with a simple tug once it has turned yellow and dried. Trim off the wasted blooms from herbaceous alliums with hedge shears or scissors once they have stopped blooming. This will maintain the plants’ clean appearance and might promote a second flush of blossoms.
Are allium bulbs safe to lift and store?
If you lift your bulbs, you should store them in a space with good ventilation and replant them in the fall. To avoid congestion, daffodils and crocuses should be dug up and transplanted every five years. A reduction in flower size, inconsistent bloom, and uneven plant height are the first symptoms of overcrowding. When this happens, you should immediately dig out the bulbs, spread them out, and replant them.
fall. The best time to lift bulbs is after frost has turned the leaves black. Care must be taken not to cut into the bulbs or tubers and harm them. Dig your bulbs early and keep them dry in a well-ventilated, frost-free area if you choose to lift the bulbs before the first frost. Simply leave the leaves on the bulbs until they are completely dry.
Before preparing them for storage, the majority of bulbs, including tulip and daffodil bulbs, should be dried for about a week. Remove any residual foliage by pulling it up, then gently shake the bulbs to
Remove any remaining soil, sprinkle fungicide powder on them to avoid rot, and then put the bulbs in old nylon stockings or unsealed paper bags with some dry peat moss to prevent them from contacting one another. Keep them out of direct sunlight in a 60 to 65F-temperature dry, cold basement, cellar, garage, or shed. Avoid temperatures below 50 and above 70F unless otherwise specified for a certain bulb. For delicate bulbs, such as Dahlias, Gladiolus, and Begonias, follow the specified storage guidelines.
Digging Up and Storing Tulip Bulbs
Tulip bulbs may be easily dug up and stored, protecting them from frost damage and squirrel damage. However, in the majority of the United States, tulip bulbs don’t actually need to be elevated. You don’t need to dig up and store tulip bulbs unless you discover that they are stunted or damaged after the winter. You might want to lift and store your tulip bulbs if you discover that they disappear throughout the winter, either dead from unfavorable conditions or stolen by hungry animals.
To avoid damaging your tulip bulbs, wait until the foliage has completely fallen back before digging. Dig around each bulb with a trowel about eight inches, then raise the bulbs and shake off the extra dirt. Cut away any superfluous foliage.
The tulip bulbs should then be placed in a box made of peat, paper, or another type of packing material to cure. After allowing the bulbs to dry for a few days, keep them in a cardboard box on paper. The bulbs can be kept in a garage or refrigerator and replanted in compost-amended soil in the spring.
Digging Up and Storing Daffodil Bulbs
Daffodils are cold hardy, so it is not essential to dig them up and transplant them. You can dig up your daffodils and store them for the winter if you wish to transplant them or just keep squirrels from stealing them.
Daffodils should not be moved until the foliage has started to die back in the fall. Lift the bulbs with a shovel or spade, then brush off any extra dirt. Trim the stems to one or two inches above the bulb after that. You can split up your daffodils now if you’re dividing them, but don’t push any young tubers away from parent bulbs. Leave them alone if they appear to be clumped together!
Daffodil bulbs should be given time to cure by being placed on a bed of peat or loam, spaced apart. After a few days, put your bulbs in a box, again spacing them apart by a few inches, and keep the box somewhere secure and dark to store them. Daffodil bulbs store well in garages and sheds at temperatures between 55 and 70 degrees.
Digging Up and Storing Lily Bulbs
In the majority of situations, Asiatic and oriental lilies don’t need to be lifted or preserved. Some lilies, however, cannot withstand the cold in climates below Zones 5 or 6. Lifting and storing your lilies will protect them from cold damage in those climates.
Use a spade or small shovel to carefully lift your rhizomes after the foliage has withered back. Cut the stem and foliage a few inches above the rhizome’s crown. Trim back the lengthy roots after gently brushing away any soil from the lily. The lily rhizomes should then be placed on paper or cardboard with a few inches of space between each one, and left to cure for three to four days in a cool, dark place.
Prepare a tray of peat moss for storage throughout the winter while your lilies are curing. When your lilies are ready, arrange them on the tray with plenty of space between them to allow for airflow. Then keep your lilies somewhere cold and dry that’s between 35 and 55 degrees Fahrenheit. To ensure adequate airflow, leave the rhizomes exposed. Over the winter, check on them to look for any signs of rot or mold.
Digging Up and Storing Gladiolus Bulbs
The majority of gladioli will need to be removed and stored because they are only hardy in Zones 7 or higher. The exception is hardy glads, however even these can be removed for storage or replanting.
Gently dig up your gladiolus plants in the late summer, but before the first frost. Because they originate from tiny bulbs known as corms, gladiolus have a slightly distinct appearance than tulips or daffodils. You might discover that the corms have fresh, tiny corms, known as cormels, adhering around the base while lifting them. In addition, Gladiolus grow a fresh corm on top of the one from the previous year. So, beneath the corm from which your Gladiolus is growing, you’ll see a dried-out one.
Brush or gently shake off any remaining soil from the corms. Cut off the foliage and flower spike a few millimeters above the corm. The next step is to treat your gladiolus. For a nice curing surface, locate a cardboard box or line a tray with paper.
Put your gladiolus corms in a curing setting. Keep your corms exposed in a shallow box or tray with enough of room between the bulbs to allow for airflow. Place the bulbs in a dry, well-ventilated place that is not very warm (over 60 degrees Fahrenheit) or below freezing.
Remove and discard the dried-up corms from the previous year that are found at the base of the fresh corms once your corms have dried completely. Those are quite simple to separate, but if you need to, you can use a fresh knife or set of scissors. Next, gently detach any new, little corms that have sprouted up at the base of the older ones. Additionally, inspect for mushy or decaying corms, and toss any bulbs that don’t appear to be in good health.
Put new parchment or newspaper in the box or tray, then reposition the bulbs in their storage location. Or, use paper or mesh bags to divide your gladiolus. The corms must not touch and must not become wet during storage, which is crucial. 35 to 45 degrees Fahrenheit should be the storage temperature range.
Can allium bulbs be dug up and stored?
Because of the wilting and discoloration of the leaf, we do not advise planting alliums as stand-alone border plants. The ideal allium companions are those that complement the long stems (such as grasses) and hide the low-lying foliage (i.e. hostas, catmint or hardy geraniums).
A blog post from Longfield Gardens offers helpful advice on how to pair alliums with perennials. You may view their manual here.
You can be extremely inventive with your alliums if you choose the ground-covering plants carefully; you could even put the bigger types, like the Globemaster, near the front of the border. The tall stems make it possible to see through to the plants behind the border.
Water, Feed and Care
Alliums don’t need a lot of water, and wet soil can cause the bulbs to rot, but they do need moisture like all other plants.
During the growing season, we give our alliums about half an inch of water per week, and they thrive. However, because our border is raised and exposed to direct sunlight, the soil dries out very rapidly. In many gardens, alliums may survive on rainfall alone because they are typically drought-tolerant.
In order to avoid the pot becoming waterlogged, alliums in pots should be watered more often.
Alliums don’t require fertilizer throughout the growth season; all they typically require is a mulch of well-rotted dung or compost once a year.
If your soil is extremely deficient, applying a dose of potash or a bulb feed like this in the spring will help, just as it would with any spring bulb.
Deadheading alliums is optional but won’t hurt them. The dead blossoms are frequently left in the garden because they offer interest.
To help the bulbs retain nutrients for the following growing cycle, it would be ideal if you waited until the foliage has completely withered before cutting it back.
When to Dig Up Allium Bulbs
It is not necessary to lift and store allium bulbs every year. The bulbs actually dislike both being disturbed and being kept in storage for extended periods of time.
The performance of the plant won’t be harmed if the bulbs are left in the soil for several years.
Every four to five years, you should dig up the bulbs to remove any rotting or sick ones and separate any large ones into separate bulbs. Instead of being stored, the bulbs should ideally be planted again right away.
Pests and Diseases
Sadly, alliums have a mild onion taste and odor, so these garden pests typically avoid them. Squirrels, foxes, and other hungry animals frequently dig up beautiful bulbs.
(Check out our advice to keeping garden foxes away if you are having a problem with them in your garden.)
Allium leaf miner is a widespread pest that is typically impossible to control, therefore as soon as the issue is discovered, the crop should be lifted and burned. Leaf rust is also typical, however it can be cured, or the leaves can be cut off. However, the majority of bacterial infections can be treated by removing leaves at an early stage. Fungicides can also be used to treat infected plants.
Which Alliums are the Best to Grow?
Although we adore the traditional Purple Sensation, the enormous Globemaster definitely draws attention.
The distinctive drumstick alliums give the assortment some early summer intrigue.