Keep your spring bulbs (tulips, daffodils, etc.) until you are ready to plant them in a dry, dark, cool location. They require airflow to prevent moisture buildup and rot. Early October in the North through mid- to late November in the South are possible planting seasons. Planting them 6 weeks before the ground freezes or after the first hard freeze is a good general rule of thumb. See pages 14–16 of our Planting Guide for further details and an example of planting depth.
The ideal soil has been composted and is well-drained. When necessary, incorporate high-quality organic compost. It is advised to use Yum Yum Mix as a great supply of the nutrients nitrogen, phosphorus, and potassium needed for robust plants and healthy roots. Before inserting your bulbs, mix a small amount into the bottom of the hole.
Many bulbs enjoy exposure to the full sun. However, moderate shade is tolerable and beneficial for Muscaria, Allium, Galanthus, Hyacinthoides, Scilla, and many daffodils.
If pink daffodils are planted in morning sun/afternoon shade or dappled shade, their color will last longer.
After planting, sprinkle the area well with water before adding a top dressing of compost or another organic material. If the winter is dry, water the plants every three to four weeks and, if necessary, apply more mulch.
To keep these burrowing rodents away from bulbs, spray the earth with a mole or gopher repellent. Use our Deer Off Repellent as bulbs grow to keep deer and rabbits away from your spring blooms.
After your bulbs have bloomed, you should let the foliage naturally brown and fade as the leaves are what feed the underground bulb. When leaves is removed, the bulb becomes weaker and produces fewer blooms the following year. One approach to hide the withering bulb foliage is to plant your bulbs with your perennials. As the foliage on the bulbs starts to fall down, the perennials grow and fill out. In the garden, the perennials will then add color and foliage from late spring through the summer and into the fall. Mulch reapplication in the fall together with regular fertilization with balanced organic or natural fertilizer will guarantee numerous years of magnificent spring bulb blooms!
For advice on taking care of your plants once you receive them, as well as planting instructions for perennials, spring-planted bulbs, fall-planted bulbs, cacti & succulents, Xeric Plants, and more, view more planting guides or download our comprehensive planting guide.
Your order will be confirmed by email as soon as it is placed. The day your order ships, you will get a second email letting you know how it was delivered. Some perennials are sent in pots, while others are shipped as peat-wrapped perennial roots. How that item will ship is described in the ‘Plant Information’ section. All perennials and bulbs planted in the spring are fully guaranteed and shipped in shipping-friendly packaging. Please read and adhere to the included instructions as soon as you receive.
How deep should I plant the Gladiator allium bulbs?
Alliums tolerate some shade but do best in full sun on soil that is rich and well-drained. If water puddles are still present 56 hours after a heavy rain, you should either choose a different location or improve drainage by adding organic material to the soil. Although alliums don’t care much about the soil, they cannot live in wet or standing water. If using containers, check that they have enough drainage holes and arrange your container sizes according on the mature size of the kinds you have chosen.
When to Plant
Usually in the fall, when they are dormant, allium bulbs are planted. They should be planted a few weeks prior to the ground freezing, despite the fact that they are incredibly durable in a dormant stage and will endure waiting. Their roots will develop after planting, and you can anticipate blooms in late spring or early summer.
How to Plant
- Find a spot with full sun for your alliums because they grow stronger stems in brighter light.
- If you’re using containers, fill them with high-quality, well-drained soil. Almost any potting medium that is sold commercially will work.
- With the sharp end facing up, create holes and bury the bulbs 48″ deep and 6″-8″ apart.
- After planting, water thoroughly to let the soil surrounding the bulbs settle.
Which month is best for planting allium bulbs?
Alliums, often known as ornamental onions, are a popular summer plant in contemporary gardens because they are adaptable and simple to grow. These lovely blooms, which come in a variety of colors and sizes, are ideal for any garden, no matter how big or tiny. See our gardening guide below for information on when and how to plant allium bulbs.
Allium bulbs need to be planted in the yard in early autumn if you want to produce these striking blooms for the late spring/early summer season (September-October).
Choose a location
Alliums grow best in protected settings with direct sunlight. They dislike being completely exposed to the elements. Tall alliums look fantastic towards the back of a border, while small types work well in pots, depending on the size of the allium.
Type of soil
In a soil with good drainage, alliums will thrive. They detest flooded ground.
putting seeds in the ground
Plant the bulbs at a depth that is around three to four times their size. Larger bulbs should be placed roughly 15 cm apart, while smaller lights can be placed about 10 cm apart.
planting in containers or pots
The best containers for alliums are deep ones. Use a multipurpose compost in a container with good drainage, and water it thoroughly.
Tip
Drainage will be improved if the pot’s bottom is filled with broken pots or stones.
How should I plant my allium bulbs?
Depending on the size of the bulb, plant them anywhere between 2 and 12 inches deep. Plant alliums with their pointed tops and flat bottoms facing up.
how do you dry alliums?
Pick off seedheads that are starting to fade and store them for a few months in a cold, dry place, such a shed or cellar. To use as Christmas decorations, I like to dry my seedheads and then spray-paint them silver.
are alliums edible?
Since they are all members of the allium family, onions, leeks, and garlic are often consumed foods. Alliums are theoretically edible, but beware eating any that are designed to be aesthetic garden plants because they may have been chemically treated.
are alliums good for bees?
In the spring, bees and other pollinators are all over our alliums. Our neighborhood beekeeper also claims that the honey doesn’t taste oniony.
do alliums need staking?
Even the tallest alliums won’t need staking since their sturdy stems can hold them if they are planted deeply enough in full sun (so they don’t extend toward the light) and in a sheltered location (so they don’t blow over in the wind).
ALLIUM PLANTING GUIDE
The allium family includes the chives in your herb garden, which are little, fluffy purple balls that bees and butterflies adore. Alliums used as ornaments, however, are anything but tiny. Big drama is what these enormous globes on tall stems are all about in your landscape. Alliums are a great choice if you are growing bulbs with kids since they enjoy the fact that when these blooms bloom, they frequently tower over them.
Garden & Container Planting
Alliums require a cold spell to establish their roots and get ready for spring, just like other flower bulbs do. So it’s time to start planting as soon as the first chill of fall appears in the air.
Although flower bulbs are hardy and simple to grow, they detest getting their feet wet since they can quickly decay if left to “bathe” in water. Therefore, avoid at all costs moist soil. this refers to locations where puddles are still visible 5–6 hours after a downpour. You can also improve possibly wet soil by incorporating organic material like peat, bark, or manure. The same motto applies when planting bulbs in containers: drainage, drainage, and more drainage. Purchase a container that has at least a few drainage holes at the bottom.
Because alliums require a lot of light to flourish, locations with less than full sun are not suitable.
Alliums must be buried deeply enough so that changes in the temperature above ground—either too warm or too cold—won’t influence them. Because containers can’t protect bulbs as well as mother earth can, it may be preferable to let your containers spend the winter indoors in a cool, dark, well-ventilated area where the temperature won’t rise above 60 degrees Fahrenheit, such as an unheated basement or garage, if you live in one of the hardiness zones 3 to 7.
The bulb is placed at the bottom of the hole with its sharp end facing up, and a hole three times as deep as the bulb’s height is dug to determine the optimal depth. When competing for nutrients with other bulbs, alliums perform worse, therefore it’s best to space them 6 to 8 inches apart.
After planting, it’s crucial to give the bulbs plenty of water to help them settle and develop roots rapidly, but after that, you won’t need to water them again. All that’s left to do is wait patiently for spring to come and surprise you with the fruits of your labor and for winter to work its magic underground.
Alliums don’t typically need watering during the flowering season, but you can water them if there hasn’t been any rain for three to five days.
Don’t trim the foliage of alliums right away after they have stopped flowering; through photosynthesis, the leaves will produce the nutrition the bulb needs for its subsequent growing season. The leaves will naturally turn yellow and die back after a few weeks, at which point you can remove it. The bulb will now enter dormancy and won’t require watering again until the following spring.
How to plant alliums in your garden:
- Wait till the soil is 60°F or colder before planting. This will happen around September or October in the North and October or November in the South.
- Choose a location in your garden that has soil that drains properly and receives full sun.
- The allium bulbs should be planted with their pointed ends facing up, 4 to 8 inches deep, and 6 to 8 inches apart.
- once, and then wait until spring.
- Don’t remove the leaf from alliums after they bloom. Remove it once it has entirely withered and become yellow.
How to plant alliums in containers:
- Wait until the soil temperature is at least 60 degrees Fahrenheit and the weather is chilly. This will happen around September or October in the North and October or November in the South.
- Choose a location in your garden that receives direct sun.
- Find a container with good drainage, fill it with loose soil, and make sure that water won’t collect and pool at the bottom.
- The allium bulbs should be buried in the ground with their pointed ends facing up, 4 to 8 inches deep, and 6 to 8 inches apart. You can try putting the bulbs closer together since containers frequently have a small amount of room, but make sure they never touch.
- If you reside in hardiness zones 3–7, you can water well once and wait until spring, or you can bring the containers inside and let them spend the winter in a cool place like an unheated garage or basement.
Special effects
You can choose the extremely regulated technique if you prefer order and cleanliness or if you want to maximize the wow-factor alliums can provide to your garden or container. Grow your alliums in straight rows with roughly 10 bulbs spaced closely apart (you might want to add some fertilizer to the soil to make sure they still get all the nutrients they need). Growing a row of 10 taller alliums, like Purple Sensation, behind a row of 10 slightly shorter ones, like Azureum, can produce an even more dramatic effect.
How late can allium bulbs be planted?
Yes! Alliums are annual plants that grow again year after year. Due of their extreme cold tolerance, they can endure most zones’ winters.
Alliums planted in the spring will still blossom, yes. Although the blossoms won’t be quite as big, they will return the next year in full force.
Allium may only grow as foliar growth, with no blooms, or not at all, if you plant it too deeply. To ensure the best growth and lessen the possibility of shallow bulbs being dug up by animals, try to put allium 4 inches beneath the soil surface.
The spring is not the time to transplant allium bulbs. Wait until the end of the summer when the foliage begins to turn yellow so that the plant will be in a dormant state and not be concentrating on new growth. It will be difficult to locate the bulbs if you wait until the stems totally wilt.