Microgreens on a Windowsill: A Beginner's Setup That Actually Works

Microgreens are the young seedlings of vegetables, herbs and some seeds, harvested when the first true leaves are just starting to appear. They are small, colourful and punchy in flavour, and you can grow them in a kitchen with almost no equipment. If you have a windowsill and ten spare minutes, you can have a fresh crop on the way.

What you need

You need a shallow tray or recycled container with drainage holes, a second tray or plate to catch water, and a fine, clean growing medium. Many people use a seed-starting mix or a thin layer of coconut coir. Buy seeds sold for sprouting or microgreens, since they are tested and usually cleaner than seeds meant only for planting in the garden. Radish, broccoli, sunflower, pea and mustard are all forgiving first choices.

Sowing step by step

Fill the tray with about two centimetres of damp medium and press it flat. Scatter the seeds fairly thickly, close together but not piled on top of each other. Larger seeds such as sunflower and pea do better with an overnight soak first. Mist the surface, then cover the tray with another tray or a plate to keep the seeds dark and moist. Check once a day and mist if the surface looks dry.

Light and water

After three or four days the seeds will have sprouted. Remove the cover and move the tray to a bright window. A south-facing window is ideal in many regions, though a cheap grow light helps in dark winter months. Water from the bottom by pouring a little into the lower tray, which keeps the leaves dry and lowers the risk of mould. Turn the tray every day so the seedlings grow evenly rather than leaning toward the glass.

Harvesting and eating

Most microgreens are ready between seven and fourteen days after sowing. Snip them just above the soil line with clean scissors, rinse gently, and dry them on a towel. Use them on sandwiches, in salads, on soup, or stirred into scrambled eggs at the end. Sunflower and pea shoots are sturdy enough to wilt lightly in a pan. Store any extra in a container lined with a paper towel in the refrigerator, where they usually keep for several days.

Troubleshooting and safety

White fuzz at the base of the stems is often fine root hairs, but fluffy mould on top of the medium is different and smells musty. If you see it, the usual causes are too much water, poor airflow or seeds sown too thickly. Thin the next sowing, add a small fan or open the window, and always use fresh medium for each batch. Because microgreens are eaten raw and grown in warm, damp conditions, wash your hands and tools, cut above the roots, and do not eat the growing medium. Pregnant people, older adults, young children and anyone with a weakened immune system are usually advised to be cautious with raw sprouts, so check current guidance for your area.

Microgreens will not replace a full diet of vegetables, but they are a fun way to add fresh colour and flavour to everyday meals. Start with one tray, learn how your window behaves, and expand from there.

This article is general information, not medical advice.