How to Grow Thyme
Thymus vulgaris
A tough, low-growing perennial herb that thrives on poor soil and neglect.
By the Plants by Zone Editorial Team · Reviewed June 1, 2026
About thyme
Thyme is a hardy, low-growing perennial that asks for almost nothing: full sun, well-drained soil, and little water. It’s evergreen in mild zones and returns reliably in colder ones, forming fragrant mats that are as ornamental as they are useful. Like other Mediterranean herbs, its flavor intensifies in lean, dry conditions.
When to plant and harvest thyme
Timing is relative to your frost dates. Find your USDA zone for exact dates, or browse the month-by-month calendars.
Start seeds indoors
6–8 weeks before last frost
Transplant outdoors
After last frost
Direct sow
Spring (or grow from divisions)
Harvest
All season; year-round in mild zones
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How to grow thyme step by step
- 1
Start from seed, cuttings, or divisions; surface-sow as seed needs light.
- 2
Plant in full sun in lean, well-drained soil — it dislikes rich, wet ground.
- 3
Water sparingly; established thyme is highly drought-tolerant.
- 4
Trim after flowering to keep plants compact and prevent woodiness.
Common problems growing thyme
⚠ Woody, sparse centers
Trim regularly and divide every few years to rejuvenate.
⚠ Root rot
Caused by heavy, wet soil — improve drainage and ease off watering.
✓ Good companions for thyme
✗ Keep away from
🧺 Harvesting thyme
Snip sprigs anytime, ideally just before flowering when the oils are strongest. Regular light trimming keeps the plant bushy and slows it from turning woody.
Thyme: frequently asked questions
When should you plant thyme?＋
In most regions you start seeds indoors 6–8 weeks before last frost, then transplant after last frost — or direct sow spring (or grow from divisions). Timing is relative to your last frost, so find your USDA hardiness zone for the exact planting dates where you live.
Does thyme come back every year?＋
Yes — it’s a hardy perennial in zones 4–9, returning each spring and staying evergreen in mild climates.
How often should I water thyme?＋
Sparingly. Thyme is drought-tolerant and prefers dry, well-drained soil; overwatering is the main risk.
Sources & review
Written and maintained by the Plants by Zone Editorial Team. Planting times are based on USDA hardiness zones and NOAA frost-date normals, with care guidance drawn from Cooperative Extension sources. Last reviewed June 1, 2026.
USDA Plant Hardiness Zone MapNOAA U.S. climate normalsCooperative Extension
Grow thyme in your zone
See exactly when to plant and what else to grow alongside thyme, tailored to your USDA hardiness zone.
