Agastache foeniculum Seeds

Lavender Hyssop Seeds

  • Purple Agastache foeniculum Seeds, Agastache foeniculum, Lavender Hyssop Seeds

Agastache foeniculum (Lavender Hyssop) is a choice wildflower from the upper Mid-West, the plant blooms in summer with light blue, bee and butterfly attracting flower spikes.

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per packet
Zones 3 - 8
Attract Butterflies
Attract Butterflies
Bee Friendly
Bee Friendly
Fragrant Flower / Foliage
Good for Cut Flowers
Light Requirements
Full Sun
Full Sun
Bloom Time Summer to fall
Shipping Most orders ship within 5 business days. Learn More…
Size Packet


Agastache foeniculum (Lavender Hyssop) is a choice wildflower from the upper Mid-West, the plant blooms in summer with light blue, bee and butterfly attracting flower spikes. The plant needs full sun and grows best in well-drained non-clay soils. USDA zones 4-8.
Common Name Lavender Hyssop Seeds
Botanical Name Agastache foeniculum
Seed Life Cycle Perennials
Light Requirements Full Sun
Flower Color Purple
Mature Height Up to 36" tall
Bloom Time Summer to fall
Ships As Seed
Seeds Per Pound 1,440,000
Seeds Per Packet 250
Days to Germination Fall Sown - Direct
Soil Moisture Average, Well Draining
Soil Type Sandy Soil, Loamy Soil
Native To North America
Native To North America
Native Yes
Ideal Region Northeast, Southeast, Midwest, Southwest, West, Pacific Northwest
Zones 3, 4, 5, 6, 7, 8
Advantages Attract Butterflies, Bee Friendly, Fragrant Flower / Foliage, Good for Cut Flowers
Edible Yes
Storable Yes- You can store your seed in any cool (not freezing) dry place that is not subject to extreme temperature variations.
Non-GMO Yes
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada Yes

Planting Guides

Step-by-Step Wildflower Seed Planting Instructions

  1. Check for your last frost date and plant after this has passed. Choose a spot on your property that gets 6 or more hours of direct sun a day unless you are planting seeds for shade.
  2. Prepare your soil by clearing the area of all existing growth. Simply dig up everything that is growing, turn the soil and rake the area flat. If this is an area that has never before been gardened, you may need to till the area up to remove growth.
  3. Mix the seeds with sand* for better visibility and scatter the seeds directly on top of the soil. If you are sowing a larger area, we recommend using a seed spreader; if not, you can sow by hand.
  4. We recommend lightly compressing the seeds into the soil, making sure not to bury them. You can either walk on them, use a board or if you are sowing a larger area, rent a seed roller.
  5. Water so that the soil is moist, not soaking wet, until the seedlings are about 4-6" tall. After that, the seedlings will survive on natural rains. If you are experiencing very dry weather, we recommend watering occasionally.
Get more information on Planting Wildflowers
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.


Most orders ship within 5 business days.

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Orders for in-season products ship within 5 business days. Depending upon your order date, we may hold your shipment to combine it with other products on your order, if applicable.

See our Shipping Information page for more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 270-5187 or Contact Us by email.

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Q & A

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).

Find Your Planting Zone:

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