When to Sow Kohlrabi?
Kohlrabi – cruciferous vegetable with a delicate flavor. Fast-growing. Below you'll find exact sowing dates, growing requirements, recommended fertilization and companion plants — all from our plant database. Click the button to see dates personalised for your region in the interactive planner.
Sowing dates – 🥬 Kohlrabi
| Sowing dates | Kohlrabi |
|---|---|
| Indoor sowing | Mar–Jul |
| Transplanting | Mar–Aug |
| Direct sowing | Apr–Jul |
| Harvest period | May–Sep |
| Days to harvest | 55 |
| Spacing | 20 × 30 cm |
| Sowing depth | 1 cm |
| Days to germination | 7 |
Growing requirements
Kohlrabi (Brassica oleracea var. gongylodes) belongs to the family: Brassica. The requirements below come straight from the app database – you will see the same values on the plant card in Gardener Planner.
| Sunlight | high |
| Water | medium |
| Soil | loamy |
| pH | 6–7.5 |
| Family | Brassica |
Fertilization (NPK)
Approximate nutrient demand. For precise doses, test your soil first – the NPK fertilizer calculator will do the math for you.
| Nitrogen (N) | medium (10–14 g/m² per season) |
| Phosphorus (P) | medium (50–70 mg/l in soil) |
| Potassium (K) | medium (150–200 mg/l in soil) |
Companion planting
Good companions reduce pests and diseases and make better use of bed space. Click a vegetable to see its sowing dates.
Good companions: Beans, Beetroot, Dill, Cucumber, Lettuce, Celery
Bad companions: Tomato, strawberry
Plan your Kohlrabi in the app
Gardener Planner lets you match sowing dates to your climate zone, track progress and plan crop rotation across your whole garden.
Open Gardener Planner →Frequently asked questions
When to sow Kohlrabi indoors?
Sow Kohlrabi indoors from Mar–Jul. Seedlings are ready to transplant after about 6–8 weeks.
When to transplant Kohlrabi?
Transplant Kohlrabi outdoors from Mar–Aug, after the last frost.
When to harvest Kohlrabi?
Harvest Kohlrabi from May–Sep (approx. 55 days from transplanting/germination).
What spacing and sowing depth?
Spacing: 20 × 30 cm. Sowing depth: 1 cm. Days to germination: 7.
What to plant next to Kohlrabi?
Good companions: Beans, Beetroot, Dill, Cucumber, Lettuce, Celery. Bad companions: Tomato, strawberry.
When to Sow? – Sowing dates for every vegetable
🍅 Tomato · 🥕 Carrot · 🥒 Cucumber · 🥒 Greenhouse Cucumber · 🥬 Lettuce · 🫑 Pepper · 🥔 Potato · 🧅 Onion · 🥬 Cabbage · 🫘 Beans · 🫛 Peas · 🥬 Radish · 🥒 Zucchini · 🎃 Pumpkin · 🧄 Garlic · 🥬 Leek · 🥬 Spinach · 🥬 Beetroot · 🥦 Broccoli · 🥬 Cauliflower · 🥬 Celery · 🌿 Parsley · 🥕 Parsnip · 🍆 Eggplant · 🌽 Corn · 🍠 Sweet Potato · 🥬 Asparagus · 🥬 Turnip · 🥬 Brussels Sprouts · 🥬 Kale · 🥬 Swiss Chard · 🥬 Arugula · 🥬 Endive · 🥬 Rhubarb · 🌿 Horseradish · 🌿 Fennel · 🥬 Artichoke · 🥬 Okra · 🥬 Watercress · 🌿 Chives · 🌿 Basil · 🌿 Dill · 🌿 Mint · 🌿 Thyme · 🌿 Rosemary · 🌿 Sage · 🌿 Oregano · 🌿 Cilantro · 🌿 Lovage · 🥬 Sorrel · 🫛 Broad Beans