Thyme

Thymus vulgaris

Thyme (Thymus vulgaris) is an evergreen Mediterranean sub-shrub and classic culinary herb. It loves sun and dry feet, grows slowly and is perennial — ideal in soil and coco, in hydro only if very well aerated.

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Important notes

concentrated oil / pregnancy: Safe as a culinary herb. Avoid concentrated thyme oil in pregnancy.

Light

Full sun, 14–16 h of light. More sun means stronger aroma.

Watering

Water sparingly and let the substrate dry between waterings; waterlogging is the main killer.

Temperature

18–28 °C; warmth-loving, hardy in the ground.

Humidity

40–55 %, dry and airy spot.

Target values by method & stage

Hydro
Stage pH EC (mS/cm) Water °C Air °C Humidity % Light h Duration (days)
Germination 6–6.5 0.4–0.8 20–24 18–24 55–65 15 14
Seedling 6–6.5 0.8–1.2 18–22 18–24 45–55 15 28
Vegetative 6–7 1–1.6 18–22 18–28 40–55 15 40
Harvest 6–7 1–1.4 18–22 18–28 40–55 14 40
Soil
Stage pH EC (mS/cm) Water °C Air °C Humidity % Light h Duration (days)
Germination 6.3–6.8 0.4–0.8 18–24 55–65 15 14
Seedling 6.3–6.8 0.8–1.2 18–24 45–55 15 28
Vegetative 6.3–7.3 1–1.6 18–28 40–55 15 40
Harvest 6.3–7.3 1–1.4 18–28 40–55 14 40
Coco
Stage pH EC (mS/cm) Water °C Air °C Humidity % Light h Duration (days)
Germination 6–6.5 0.4–0.8 20–24 18–24 55–65 15 14
Seedling 6–6.5 0.8–1.2 18–22 18–24 45–55 15 28
Vegetative 6–7 1–1.6 18–22 18–28 40–55 15 40
Harvest 6–7 1–1.4 18–22 18–28 40–55 14 40

Common problems

Root rot in wet soil, grey mould/mildew in still air, woodiness without trimming.

Pests & diseases

Pest / Disease Symptom Organic treatment
Spider mites speckled leaves humidity, predatory mites
Root rot wilting in wet soil sandy, free-draining mix

Edible parts

  • Leaves · edible from Vegetative
  • Flowers · edible from Flowering

Yield techniques

Harvest shoot tips just before flowering (peak aroma); trim regularly but not into old wood.

Propagation & pollination

Method
cutting
Germination time
14 days
Germination temp
18-21 °C
Sowing depth
0.3 cm
Pollination
insect
Hand pollination needed
no

cuttings, division or seed

Companion planting

🟢 Good neighbours: Sage, Bay Laurel

Flavor

earthy, savoury, slightly minty-lemony

Storage

Dries excellently, bundle the sprigs.

History

Thyme was used for embalming in ancient Egypt and was a symbol of courage for the Greeks. It comes from the Mediterranean.

Nutrition

Contains vitamin C and the antiseptic thymol.

Sources

Florabase

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