START HERE
Quick Facts
- Sowing window
- Surface-sow indoors in spring and plant out from mid-spring after hardening off.
- Harvest window
- Pick aromatic young shoots through spring and summer.
- Difficulty
- Easy
- Container suitability
- Use a 15–20cm deep pot with drainage holes. Choose a free-draining mix and full sun; established plants dislike sitting wet.
- Frost sensitivity
- Hardy or semi-hardy once established
- Typical time to harvest
- Begin light picking once plants are established, usually 6–12 weeks after sowing, and never strip more than one third at once.
SOW
When to Sow Thyme French Summer in the UK
Surface-sow indoors in spring and plant out from mid-spring after hardening off.
Use that window as a practical starting point rather than a fixed deadline. In colder or exposed areas, delay outdoor sowing and planting; in mild sheltered areas, the earlier end of the range may work. Tender crops should remain protected until frost risk has passed.
Sowing Indoors
Sow Thyme French Summer in small pots or modules. Give seedlings bright light and avoid burying very fine herb seed deeply; thyme is best surface-sown.
Sowing Outdoors
Direct sow Thyme French Summer when conditions are suitable, or plant out module-grown seedlings after hardening off.
PLANT
Spacing and Planting Out
Space or thin to 10–20cm, depending on whether you want individual plants or a harvestable clump.
Before planting outside, harden off indoor-raised plants over 7–10 days unless the crop is fully hardy and already accustomed to outdoor conditions. Water the planting hole or container first and avoid leaving young roots exposed to sun or wind.
SMALL SPACES
Growing Thyme French Summer in Pots and Containers
Use a 15–20cm deep pot with drainage holes. Choose a free-draining mix and full sun; established plants dislike sitting wet.
Container checklist
- Use drainage holes and raise pots slightly so surplus water can escape.
- Fill with fresh peat-free compost suited to edible crops.
- Leave a watering lip below the rim and check pots more often in sun or wind.
- Use a strong support at planting time if the mature crop will climb or become top-heavy.
CARE
Watering and Feeding
Water young plants regularly, then let the compost surface dry between thorough waterings. Avoid rich feeding; a light spring feed is enough for perennial herbs.
Variety note: Grow in a sunny, free-draining pot or raised bed and avoid wet winter soil.
WATCH FOR
Common Problems
Slow or patchy germination
Some herb seed is naturally slow. Keep the surface evenly moist, use fresh seed compost and avoid repeated digging to check it.
Leggy seedlings
Move seedlings into stronger light as soon as they emerge and avoid excessive warmth after germination.
Bolting or woody growth
Heat and dry roots push leafy herbs to flower; older perennial herbs become woody if never trimmed. Harvest little and often.
PICK
Harvesting Thyme French Summer
Pick aromatic young shoots through spring and summer.
Begin light picking once plants are established, usually 6–12 weeks after sowing, and never strip more than one third at once. Harvest in the coolest part of the day where practical and handle produce gently. Regular picking encourages continued cropping in fruiting and cut-and-come-again plants.
GROW TOGETHER
Companion Plants
Herbs can share a windowsill or patio grouping, but combine plants with similar watering needs. Keep dry-loving thyme away from constantly moist watercress or coriander compost.
QUESTIONS
Frequently Asked Questions
Can I grow Thyme French Summer in pots?
Use a 15–20cm deep pot with drainage holes. Choose a free-draining mix and full sun; established plants dislike sitting wet.
How long does Thyme French Summer take to harvest?
Begin light picking once plants are established, usually 6–12 weeks after sowing, and never strip more than one third at once.
Why is my Thyme French Summer growing weak and leggy?
It needs brighter light and usually less heat after germination. Turn pots regularly, avoid crowding and pinch suitable leafy herbs once established.