Agastache foeniculum Seeds
Lavender Hyssop Seeds
DetailsAgastache 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|
|Mature Height||Up to 36" tall|
|Bloom Time||Summer to fall|
|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|
|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, Native, Extended Bloom Time (more than 4 weeks), Great for Mass Plantings|
|Storable||Yes- You can store your seed in any cool (not freezing) dry place that is not subject to extreme temperature variations.|
|Neonicotinoid-Free||Yes - Learn More|
|Ships to Hawaii, Alaska & Canada||Yes|
Step-by-Step Wildflower Seed Planting Instructions
- 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.
- 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.
- 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.
- 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.
- 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.
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 48 hours or less.
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.
Reviewed by 1 customer
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- Attracts hummingbirds
- Reliable perennial
- Back of border
Very dependable, long-lived perennial, that attracts butterflies, hummingbirds and bees. Have had the same plant growing for years. They are late summer blooming in Colorado at 6500', providing a welcome blue color in the garden when most other flowers are spent. They love full sun and can easily take blazing heat. They do best in decent sandy loam with watering, but tolerate dry soil well. Very tall! Our gets to about 4 feet every summer, so best near the back of a border.
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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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