Hyssop Growing Guide
Growing Hyssop is easier than you think. This guide walks you through everything you need — from planting your first seed to harvesting.
At a Glance
Difficulty
Easy
Category
Herb
Sun Exposure
Full Sun
Frost Tolerance
Frost Hardy
Cold Hardiness
Survives to -29°C
Plant Family
Lamiaceae
Growing Season
Warm Season
Plant Lifecycle
Perennial
Also grows well as
How to Start It
★ Recommended for beginners
Surface-sow indoors 8 weeks before last frost or direct-sow in spring. Germinates in 2–3 weeks; thin to 30 cm.
Hyssop comes readily from seed and is a tough, long-lived perennial that bees and butterflies adore. Trim it after flowering to keep it neat.
When To Start
First Chance to Plant
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Last Chance to Plant
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When should you plant Hyssop?
Your planting dates depend on your local climate. Sign up and add your location to unlock personalized dates.
Your Hyssop Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
The Journey Ahead
Hyssop's Lifecycle
Seedling
Mature Plant
Seed Production
Step 2
Planting & Sprouting
Expect sprouts in 14–21 days
Growing Tips
- 1Hyssop thrives on full sun and sharp drainage and shrugs off drought.
- 2Leave plenty of flowers for the pollinators, and shear it lightly after blooming.
Seedling Phase
Step 3
Growth & Maturity
60 cm
Mature Height
40 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
When to Pick
Pick leaves and flower spikes through the season; flavour peaks at flowering
How to Harvest
- 1Snip leafy stems and flower spikes as needed.
- 2Cut the whole plant back by a third after its main flush of flowers to keep it bushy and tidy.
Step 5
Saving Seeds
How to Save Seeds
Let some flower spikes dry on the plant, then shake the small seeds into an envelope. Hyssop self-seeds gently.
Seed Production
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