Winter purslane on the windowsill: a salad kids can grow
When nothing is growing outside any more, winter purslane gives you fresh greens in your kitchen within weeks – and kids can watch it happen.
In November the raised bed is resting, but kids still want to sow and harvest. Winter purslane (also called miner’s lettuce or claytonia) is perfect for that: it likes cool conditions, germinates reliably and can be cut after just four to six weeks. A shallow pot on the windowsill is all you need.
Why winter purslane?
Winter purslane originally comes from North America but has long been grown as a winter salad in Europe. It copes well with low temperatures and does not need a heated living room. The small, round leaves taste mild and slightly nutty, and kids who normally refuse salad often try it because they sowed it themselves. It is also undemanding: you need no special compost, no grow light and no garden space, just a tray and a little patience.
The right spot
Put the tray at a bright window, ideally in a cool room at around 10 to 15 degrees Celsius, such as a stairwell or bedroom. Directly above a radiator, purslane quickly turns long, thin and pale. The cooler and brighter it is, the sturdier and more compact the leaves become. Turn the tray every few days so the seedlings do not lean toward the light. For kids, that makes a nice observation task.
How kids sow it
Fill a shallow tray or wide pot with loose seed compost and press it down lightly. The seeds are tiny: let the kids sprinkle them across the surface between their fingers and cover them with only a whisper of soil, or none at all, because purslane germinates best in light. Then moisten gently with a spray bottle. The soil should stay evenly damp but never soggy. A tip for impatient little gardeners: let the kids take one photo a week. That way they see step by step how specks of dust turn into salad.
Patience and harvest
The first seedlings appear after one to two weeks. From four to six weeks, once the leaves are about five to eight centimetres tall, cut them with scissors just above the soil. Leave the growing point in place and the plant regrows, so you can harvest several times. Eat the tender leaves and stems raw in salad, on a sandwich or alongside potatoes. Expect a small harvest per cut: one tray adds to a meal rather than feeding a whole family. In return, it is harvested and rinsed in minutes.
Common stumbling blocks
Waterlogging and too much warmth are the most common problems. Yellow leaves are often a sign of too much water; if the plants grow long and thin it is usually too warm or too dark. Sow a new tray every two weeks and your family has fresh greens all winter. Wash the leaves thoroughly before eating.
And next year?
Once the kids have developed a taste for it, you can also sow winter purslane straight into the raised bed in autumn. Note the date in your 2027 planting calendar right away, and you will remember it in good time next autumn.