Afharden: van vensterbank naar buiten zonder groeischok
Een zaailing die binnen beschut stond, moet wennen aan wind, zon en koelere nachten. Met een rustige overgang maak je de stap naar je tuin kleiner.
By Redactie MoestuinApp · updated
This image was created with AI from described plant characteristics and growing advice. It shows a possible situation and is not a photograph of a verified cultivar.
Look ahead to planting out
Outdoor plants raised indoors face a big change if moved straight into an open bed. Start acclimatising them outdoors about two weeks before planned planting out. This is a practical build-up, not a guarantee that every plant is ready after exactly fourteen days. Consider the species, forecast and shelter you can offer. Courgettes and tomatoes remain frost-sensitive even after successful acclimatisation. A chilly spring needs more patience than a run of mild, cloudy days.
A sheltered first afternoon
Initially put the pots in a sheltered, lightly shaded spot for a limited time. Avoid strong wind and bright midday sun on the first day. Leaves grown indoors can dry out or scorch outdoors faster than you expect. Bring frost-sensitive plants back inside before a cold night. Gradually extend their time outside and expose them increasingly to their final growing position. A cold frame with an adjustable lid can ease the transition. Do open it: a closed frame in the sun can become very hot.
Make a short daily round
Check compost with a finger and watch leaf firmness. Small pots dry faster in wind than indoors. Water helps dryness, but a permanently wet root ball does not protect against cold. Stand pots securely in a tray. If leaves turn pale or limp after sudden sunshine, return to more shelter. You need not catch up with a timetable. Log which cultivar stood outdoors and its response; that helps the next batch more than a general date.
The first week in the bed counts too
Plant on a calm mild day where possible, in prepared soil. Water the root ball first and make a crop-suited hole. Afterwards water around roots and recheck slugs and drying. Keep protection ready for unexpected cold. Fleece does not make a highly frost-sensitive crop indefinitely safe: delaying planting is often better with forecast frost. If uncertain, keep spare plants in pots rather than risking the entire batch on the first attempt.
How to do it
- Check the crop and weather forecast.
- Start briefly outdoors in a sheltered position.
- Increase outdoor time gradually.
- Bring sensitive plants indoors on cold nights.
- Plant out only when conditions and crop are suitable.
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Checked on 2026-10-13. This guide was originally written using the listed sources. Growing advice from other countries is not a local weather forecast.
- Seed sowing techniquesRHS · checked 2026-10-13
- Hardening off tender plantsRHS · checked 2026-10-13
- Starting seeds indoorsUniversity of Minnesota Extension · checked 2026-10-13