Cress in October: sow indoors, keep it bright
Cress and microgreens make a compact October sowing project for the windowsill. Suitable seed, clean equipment, controlled moisture, airflow and enough light matter most.
AI-generated illustrative image.
Daylight is becoming scarcer in October, but the sowing season is not over for a small indoor project. Cress and other microgreens can grow on a bright windowsill. Suitable seed, clean equipment, controlled moisture, airflow and enough light matter more than the calendar.
Five choices for a small October batch
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Choose seed intended for eating
Use untreated seed specifically sold for edible microgreens or sprouting vegetables. Garden cress, radish and broccoli are straightforward examples. Tomato, pepper, aubergine and potato seedlings do not belong in an edible microgreen mix.
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Start clean and keep species separate
Clean the watering tray, seed tray and cover before sowing, and work with clean hands. Fill the seed tray with a fine, fresh seed-sowing medium. Sow evenly without piling seed into thick layers. The right quantity and sowing depth depend on the species and seed size, so follow the seed packet.
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Keep moist without flooding
Moisten the growing medium before sowing. Afterwards, keep it evenly moist without leaving water standing in the tray. The mat can help supply water from below, but it does not remove the need to check. Use a fingertip each day to find areas that are becoming drier or markedly wetter than the others.
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Vent the cover in good time
A cover helps retain moisture during germination. Once many seedlings are visible, or heavy condensation forms, start venting and then remove the cover. Persistently warm, still air and wet growing medium do not support a robust crop. Discard the entire batch if it becomes mouldy, slimy or unpleasant-smelling.
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Light matters once seedlings emerge
Move the seedlings to a very bright position after germination, but not directly above a radiator. Long, thin, pale stems or seedlings leaning strongly towards the window show that daylight is insufficient; a suitable grow light is then more useful than keeping the cover closed.
Microgreens are not jar-grown sprouts
Microgreens grow on a medium and develop cotyledons in the light, sometimes followed by the first true leaf. Only the shoots above the medium are cut with clean scissors. Harvest timing varies by species: follow the seed instructions and use only crops that look fresh and smell normal.
Your quick windowsill check
- untreated seed intended for edible microgreens
- a clean watering tray, seed tray, cover and scissors
- fine, fresh growing medium without waterlogging
- vent and remove the cover after emergence
- a bright position and a daily visual check
The product image shows the propagator actually offered. Clean all reusable parts before a new sowing, following the relevant material-care instructions.
