Customer Service Hours
Mon-Fri 8-4 MST
Features
Family
Lamiaceae
Native
Africa, Asia, Europe
Life Cycle
Perennial
Plant Height
Medium (12" - 24")
Flower Color
Purple
Bloom Season
Summer
Further Information
Plant Characteristics
- Attracts Beneficial Insects
- Attracts Butterflies
- Attracts Pollinators
- Cut Flower
Growing Conditions
Drought Tolerant
Plant Resistance
Deer Resistant
About True Hyssop Seeds
Hyssopus officinalis
2"–6" long spikes with many tubular, purple-blue flowers
Planting Hyssop
Plant Spacing
A group of 3 seeds every 12"
Hardiness Zones
10, 11, 3, 4, 5, 6, 7, 8, 9
Light Required
Full sun to part shade
Plant Height
Medium (12" - 24")
Planting Depth
Press into surface
Planting Details
| Seed Depth | Press into surface |
|---|---|
| Seed Spacing | A group of 3 seeds every 12" |
| Thinning | When 1" tall, thin to 1 every 12" |
| Germination | 14–31 days |
| Start Indoors | RECOMMENDED. 6 to 8 weeks before your average last frost date. |
| Direct Sow | 2 to 4 weeks after your average last frost date. May also be sown in late fall for spring germination. |
Find Your Frost Date & Grow Zone
Average First Frost Date
October 19
Average Last Frost Date
May 19
Your Hardiness Zone is
5b
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Rating
Which best describes you as a gardener?
23 reviews
- ChristopherRated 5 out of 5 stars9/7/265 Stars
All the seeds germinated! Can’t wait to add to my herb garden!
- ToniVerified BuyerRated 4 out of 5 stars8/31/26Beginner!
Just got my seeds! Sowed into soil and watered. Now sitting in full sun. Middle of our summer here in San Antonio. Hopefully passed 100+ degree weather. Hoping to see some growth in 6 weeks🤞
Which best describes you as a gardener? BeginnerBIBotanical Interests9/3/26Hey Toni,
We're so excited that you've got your True Hyssop Seeds and you're already getting them started! It's awesome that you're diving in as a beginner and giving them full sun in San Antonio - that's a great setup. We're rooting for you and those seeds over the next 6 weeks! Keep us posted on how they grow. Thanks so much for being part of the growing community! Keep on growing 🌻
- Britany G.Verified BuyerRated 5 out of 5 stars1/25/255 Stars
These seeds. Including many other flowering seeds, germinated quickly! I started them indoors to be able to provide food for the hummingbirds when they arrive again.
- william o.Verified BuyerRated 5 out of 5 stars10/12/245 Stars
Excellent seeds and service. Will order again. Thank You
Which best describes you as a gardener? Intermediate - Donald G.Rated 5 out of 5 stars7/12/245 Stars
These true hyssop seeds pay off the second year. These two plants on either side of my little walkway are about 36" tall, and now in July (Zone 8b) their blooms are hitting their stride!
Which best describes you as a gardener? Intermediate