Bloom Time Chart for Allium Bulbs


If you’re one of the many gardeners who have fallen in love with alliums, our new bloom time chart could get you into some trouble. We have organized the 12 most popular allium bulbs by height, flower size and bloom time. This makes it easy to see at a glance which types you have and which ones you still need to get!

It’s impossible to predict exactly when a plant will bloom. But that said, this chart is a good reference for the bloom time sequence you can expect. If you choose alliums that bloom at different time during the season — early, mid and late — you’ll have alliums flowering from late spring through midsummer.


When to Plant Allium Bulbs

Fall is the best time to add alliums to your garden. Most types grow from bulbs that are planted in the fall, at the same time as tulips and daffodils. (Herbaceous alliums such as ‘Millennium’ are available as plants during spring and summer).

We ship allium bulbs from September through November, but you can order as early as May. Your bulbs will be set aside in our climate-controlled warehouse until proper planting time. We will not charge your credit card until we ship the bulbs. It’s the best way to guarantee you won’t forget to order and run the risk of missing out on popular types.

Need some inspiration for how to use alliums in your garden? We collaborated with garden designer Nick McCullough on two perennial garden designs featuring alliums: Bountiful Blooms and Daring Forms. Both include plant lists for all the bulbs and perennials, and we also offer bulb collections to support each design.

The National Garden Bureau chose alliums as the Bulb of the Year for 2016. Learn more about these easy-to-grow, deer-resistant perennials, here: Alliums for Every Garden, Allium Garden Design: Bountiful BloomsTypes of AlliumsPlanting Fall Bulbs in a Meadow (video).