Allium senescens Blue Twister
Corkscrew Ornamental Onion
Details12" tall x 10" wide (seed & division propagated). A High Country Gardens selection of Allium senescens, this cultivar was selected from a large group of seed-grown plants for its noticeably brighter, blue-green foliage. In the garden, 'Blue Twister' is very attractive with its distinctive corkscrew leaves and summer-long display of lavender-pink flowers (deadheading keeps the new flowers coming). Plant in among groundcovers that have gray foliage Cerastium, Marrubium, and Woolly Thyme are all good choices. An easy-to-grow plant in any garden soil.
|Common Name||Corkscrew Ornamental Onion|
|Botanical Name||Allium senescens Blue Twister|
|Zones||3, 4, 5, 6, 7, 8|
|Light Requirements||Full Sun, Morning Sun & Afternoon Shade|
|Mature Height||12" tall|
|Mature Spread||10" wide|
|Ships As||Potted Plant|
|Planting Time||Spring / Summer|
|Soil Type||Sandy Soil, Clay Soil, Average Soil|
|Soil Moisture||Drought Resistant / Waterwise|
|Amount of Rain||10 to 20", 20 to 30", 30 to 40" (with care)|
|Advantages||Deer Resistant, Attract Butterflies, Bee Friendly, Rabbit Resistant, Extended Bloom Time (more than 4 weeks), High Impact - Low Maintenance|
|Special Groups||High Country Gardens Exclusive|
|Ideal Region||Suitable Above 7000 ft, Anywhere In The US|
|Neonicotinoid-Free||Yes - Learn More|
|Ships to Hawaii, Alaska & Canada||No|
Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.
Grass Plugs Will ship at planting time in spring 2017, beginning in late February.
Wildflower Seed & Grass Seed Orders ship within 2-3 days.
Standard shipping costs are $4.99 and up, depending on the size of the order.
Make Fast Even Faster: For ‘Rush’ same week delivery, please call customer service at 800-925-9387.
Q & A
Suggested Companion Plants:
USDA Hardiness Planting Zones
To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.
- If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
- If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).
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