Agastache Purple Haze
Purple Haze Hyssop
30-36" tall x 30-36" wide. Watching the performance of this new hybrid Hyssop, chief horticultist David Salman has been very impressed with Purple Haze's summer-long display of long, thin flower spikes covered with dark blue violet flowers. Very popular with the bees and butterflies. It is also more moisture tolerant, making it a good choice in moister climates.
|Common Name||Purple Haze Hyssop|
|Botanical Name||Agastache Purple Haze|
|Zones||6, 7, 8, 9, 10|
|Light Requirements||Full Sun|
|Flower Color||Blue, Purple|
|Mature Height||30-36" tall|
|Mature Spread||30-36" wide|
|Ships As||Potted Plant|
|Planting Season||Spring / Summer, Fall|
|Soil Type||Low Fertility Soil, Well-Drained Soil|
|Amount of Rain||20 to 30", 30 to 40", 40 to 50"|
|Advantages||Deer Resistant, Attract Butterflies, Bee Friendly, Rabbit Resistant, Fragrant Flower / Foliage, Good for Containers|
|Ideal Region||Anywhere In The US|
|Neonicotinoid-Free||Yes - Learn More|
|Ships to Canada||No|
Tips for growing Agastache
Agastache are sun loving plants with aromatic foliage and flowers. They bloom from mid-summer into early fall and are resistant to rabbits and deer.
Agastache need lean, well-drained soils, prefer gravel mulches, and appreciate deep but infrequent watering after their second growing season
- Provide a fast draining soil that's naturally low in fertility, Don't plant into clay soils.
- Plant in full hot sun.
- Just a few handfuls of compost in the planting hole is enough. Don't plant into a rich, highly amended soil..
- Fertilize the Agastache just once in fall with Yum Yum Mix and Planters II.
- New transplants need regular irrigation their first growing season to establish themselves. Watering can be reduced greatly during the second growing season when the plants have matured.
To improve winter-hardiness, and encourage re-seeding, leave the stems intact over the winter. In mid-spring, remove old stems just above the new foliage, about 4 or 5 inches above ground level.
If your conditions don't lend themselves to growing Agastache in your garden, they do well planted in containers.
More in-depth guidance for growing Agastache: Agastache Growing Tips, Agastache: Super-Stars of the Perennial World Part 1, and Agastache: Super-Stars of the Perennial World Part II.
View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.
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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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