🍂 What to Plant
in September
September — autumn is knocking at the door. Harvest the last summer crops, plant garlic and winter onions for next year, and plant fruit trees and shrubs. September is the ideal month for establishing new perennial plants before winter.
🌿 Plant outdoors
September is the best month to plant garlic and to start establishing perennial fruit trees and shrubs for next year.
Direct sow
Sow spinach directly for autumn harvest. It germinates readily in September warmth and tolerates light frost. Harvest outer leaves continuously.
Plant garlic in September
September is the ideal month for planting winter garlic (ozimý česnek) in Czech Republic. Winter garlic develops roots before the ground freezes and then produces much larger, better-flavoured bulbs than spring-planted garlic. Harvest the following July.
🧺 Main September harvests
September brings the final summer harvests alongside the main fruit season. Harvest before the first frosts arrive.
Harvest remaining tomatoes before frost. Bring green tomatoes indoors to ripen on a windowsill — they will colour in 1–2 weeks.
Main harvest of autumn apple varieties. Store in a cool place. Check stored apples weekly — one bad apple spreads rot to its neighbours.
Harvest ripe grape bunches. Taste before cutting — they should be fully sweet. Make juice, wine or eat fresh.
Main plum harvest — the best for traditional Czech povidla (plum butter). Process immediately or freeze for later cooking.
Harvest pears and let them ripen in a cool place. Picked direct from the tree they are still hard — ripen at room temperature.
Dig late varieties now. Allow to dry on the surface for a few hours before storing in paper sacks in a cool, dark place.
Harvest pumpkins before the first frost. Knock — a ripe pumpkin sounds hollow. Cure for 10 days in warmth for longer storage.
Collect fallen walnuts as soon as they drop. Remove husks and dry in a warm airy place for 2–3 weeks before eating or storing.
💡 September gardening tips
- ✓Plant garlic and winter onion sets — September is the ideal time
- ✓Harvest apples, pears and plums
- ✓Plant fruit trees and shrubs — they establish best in autumn
- ✓Compost plant waste from cleared beds
⚠️ Common September mistakes
- ✗Forgetting to plant garlic — September is the ideal timing, October works too
- ✗Not protecting frost-sensitive plants from the first early frosts
- ✗Leaving fallen leaves on the lawn — the grass will die under them
Frequently asked questions
When should I plant garlic in Czech Republic? ▼
Plant winter garlic (ozimý česnek) in September or early October in Czech Republic. This gives cloves time to establish roots before the ground freezes. Plant 5 cm deep, 15 cm apart, pointed end up. Winter-planted garlic produces larger, better-flavoured bulbs than spring-planted garlic and is harvested the following July.
Is autumn a good time to plant fruit trees? ▼
Yes — autumn (September to November) is the ideal time to plant fruit trees and shrubs in Czech Republic. The soil is still warm from summer, which encourages good root establishment before winter. Bare-root trees are available from nurseries from November; container-grown plants can be planted from September.
How should I store apples for winter? ▼
Store apples in a cool (2–4°C), dark, slightly humid place. Wrap each apple individually in newspaper if storing for months. Only store perfect, undamaged fruit. Pears should be harvested slightly under-ripe and stored in a cool place — check every few days as they ripen quickly once they start.
What vegetables can I harvest in September? ▼
September brings a huge range of final harvests: tomatoes (bring green ones indoors to ripen), peppers, cucumbers, courgettes, beetroot, carrots, autumn kohlrabi, late potatoes, pumpkins, grapes, autumn apples, pears, plums and walnut. Herbs: final outdoor harvest of basil, parsley, mint, chives and rocket.
Plan next year's garden in September
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