Allium Growing Tips & DIY Garden Art Project

Twitter Facebook Pinterest Email

Alliums are those gorgeous flowering perennials in the spring garden with the big, round purple flower heads on tall, green stems. They are easy to grow, attract bees and butterflies, and (bonus) deer and rabbits don’t like them.

This is part of my Best Flowering Plants for a Cottage-Style Garden series.

Bees Love Alliums

Alliums are those gorgeous flowering perennials in the spring garden with the big, round purple flower heads on tall, green stems. They are easy to grow, attract bees and butterflies, and deer and rabbits don't like them. — Pink peonies and purple alliums

I love alliums. Just as the early spring tulips and daffodils are finishing up, it’s allium time.

There’s nothing quite like these tall, bold flowering plants with their giant purple flower heads.

As winter fades out, there are few food sources available, and the bees go wild for them, marking the transition to the warm growing season.

Alliums are bulb plants. Planted in fall, they will flower in spring, and provide blooms for several years to come.

The bulbs will gradually multiply, and the original bulbs will gradually weaken or die off.

At some point you may need to divide the bulbs to give the babies adequate growing space.

Allium flowers also produce seeds, which may sprout in the garden as well.

I’ve certainly found that alliums spread around my garden (which I love), but I’m not entirely sure if it was by seed or bulb.

I’d blame the squirrels, although it’s unlikely they would dig up a bulb that smells like onion.

Allium Facts & Growing Tips

Alliums are monocotyledonous flowering plants. This genus has hundreds of species including chives, garlic, leek, onion, scallion, and shallot.

Have onions stored in your kitchen sprouted? See how to regrow them.

USDA Plant Hardiness Zones | 3 to 8
To find your growing zone, use the following sites:

United States – USDA Plant Hardiness Zone Map
Canada – Provincial Plant Hardiness Zone Maps

Flower Times | Late spring to early summer
Colors | Light to dark purple, some are reddish-purple
Soil | well-drained soil
Grow in Containers? | yes
Planting Depth | 3x the height of the bulb
Fertilizer | Check your plant labels
Attractive to | Bees and butterflies
Avoided by | Deer and rabbits
Propagation | Plant bulbs in fall, after first frost but before ground freezes
Toxicity | None known: in the onion family; some are edible, others are not
Trivia | The word allium is Latin for garlic. Allium sativum means ‘cultivated garlic‘. Some alliums are edible; some are strictly ornamental. The pungency of edible alliums is determined by the sulfate content of the soil: the more there is, the stronger the flavour.

After Blooming | Allow foliage to die off naturally as it provides fuel for next year’s growth. Cut off finished blooms to encourage new flowers or allow to dry: they are pretty in the garden but can spread seeds (I’ve not found this to be a problem).
Divide Bulbs | Spring or fall

Alliums in My Garden (Ontario, Canada – zone 6b)

I don’t have the names of the alliums in my garden. The first batch were given to me in an unmarked bag by someone in our local horticultural society (love that!). If I find the name, I’ll list it here. My favorites have deeper colors and huge flower heads. I like flower drama!

Allium Shop

When buying alliums, read the info carefully. Are they bulbs or seeds? Bulbs are going to grow flowers the next season. Seeds will take a lot more time.
Also check how large they are expected to grow, the flower color (they can vary greatly from almost white, to mauve, to purple, and reddish-purple), and growing preferences. The most common ones like sun and well-drained soil but there are also varieties that enjoy partial shade and drier conditions.

Alliums	Alliums
Allium Garden Art

Allium Garden Art Project

FREE INSTRUCTIONS
I love over-sized garden art. To recreate the beauty of alliums, I came up with this DIY garden art allium project using items from the thrift shop.