Light
Full sun, 14–16 h of light. More sun means stronger aroma.
Watering
Water moderately and let it dry slightly between waterings — marjoram dislikes wet feet.
Temperature
18–26 °C; warmth-loving and frost-sensitive.
Humidity
40–55 %. Dry air helps prevent fungal issues.
Target values by method & stage
| Stage | pH | EC (mS/cm) | Water °C | Air °C | Humidity % | Light h | Duration (days) |
|---|---|---|---|---|---|---|---|
| Germination | 6–6.5 | 0.4–0.8 | 20–24 | 20–25 | 55–65 | 15 | 10 |
| Seedling | 6–6.5 | 0.8–1.2 | 18–22 | 18–24 | 50–60 | 15 | 18 |
| Vegetative | 6–6.8 | 1–1.6 | 18–22 | 18–26 | 40–55 | 15 | 30 |
| Harvest | 6–6.8 | 1–1.4 | 18–22 | 18–26 | 40–55 | 14 | 30 |
| Stage | pH | EC (mS/cm) | Water °C | Air °C | Humidity % | Light h | Duration (days) |
|---|---|---|---|---|---|---|---|
| Germination | 6.3–6.8 | 0.4–0.8 | — | 20–25 | 55–65 | 15 | 10 |
| Seedling | 6.3–6.8 | 0.8–1.2 | — | 18–24 | 50–60 | 15 | 18 |
| Vegetative | 6.3–7.1 | 1–1.6 | — | 18–26 | 40–55 | 15 | 30 |
| Harvest | 6.3–7.1 | 1–1.4 | — | 18–26 | 40–55 | 14 | 30 |
| Stage | pH | EC (mS/cm) | Water °C | Air °C | Humidity % | Light h | Duration (days) |
|---|---|---|---|---|---|---|---|
| Germination | 6–6.5 | 0.4–0.8 | 20–24 | 20–25 | 55–65 | 15 | 10 |
| Seedling | 6–6.5 | 0.8–1.2 | 18–22 | 18–24 | 50–60 | 15 | 18 |
| Vegetative | 6–6.8 | 1–1.6 | 18–22 | 18–26 | 40–55 | 15 | 30 |
| Harvest | 6–6.8 | 1–1.4 | 18–22 | 18–26 | 40–55 | 14 | 30 |
Common problems
Root rot from waterlogging, grey mould in damp air. Plant free-draining and water sparingly.
Space & Size
- Final height
- 40 cm
- Final width
- 30 cm
- Spacing
- 25 cm
- Root depth
- 20 cm
- Min. container (Hydro)
- ≥ 2 L
- Min. container (Soil)
- ≥ 3 L
- Min. container (Coco)
- ≥ 3 L
Pests & diseases
| Pest / Disease | Symptom | Organic treatment |
|---|---|---|
| Aphids | sticky shoot tips | rinse off, beneficials |
| Root rot | wilting, yellowing in wet soil | water less, free-draining mix |
Edible parts
- Leaves · edible from Vegetative — fresh or dried
- Flowers · edible from Flowering
Yield techniques
Harvest before flowering (peak aroma); regular trimming keeps the plant compact.
Propagation & pollination
- Method
- seed
- Germination time
- 10 days
- Germination temp
- 18-21 °C
- Sowing depth
- 0.3 cm
- Pollination
- self
- Hand pollination needed
- no
light germinator — press in only
Companion planting
🟢 Good neighbours: Coriander (Cilantro)
Flavor
sweet, mild and aromatic, more resinous than oregano
Storage
In the fridge or dried — it dries very well.
History
Marjoram comes from the Mediterranean and Western Asia and was a symbol of happiness and love in antiquity.
Nutrition
Contains antioxidants and vitamin K, mildly aids digestion.
Techniques
Sources
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