Winter Purslane

Claytonia perfoliata, also known as miner's lettuce, is a fleshy, cold-hardy annual leaf green native to North America. It produces distinctive heart-shaped leaves that encircle a delicate stem topped with tiny white edible flowers. The flavour is fresh, mild, and slightly wild. It thrives in cool, shaded conditions and tolerates frost well, making it ideal for extended harvests into cold periods, especially under cover.

Growing

Direct-sow seeds on the surface or press to a depth of 0.5 cm into moist, well-prepared soil once soil temperature reaches 2 °C. Broadcast thinly or sow in rows 20–30 cm apart, thinning or transplanting seedlings to 10–15 cm spacing. Seeds are light-germinators — keep the seedbed moist and avoid deep burial. Germination takes 10–15 days. For a continuous supply, make successive sowings while temperatures remain cool. Claytonia does equally well direct-sown outdoors or transplanted from cells started indoors.

Care

Water regularly to keep the soil evenly moist but not waterlogged; claytonia wilts quickly in dry conditions. No feeding is necessary on fertile soil, but a light application of balanced fertiliser supports vigorous leaf production on poor soils. Weed around young plants until the canopy closes. No staking or pruning needed. In hot spells above 18 °C the plant bolts — use shade cloth or relocate to a cooler, shadier position.

Harvest

Begin harvesting individual leaves and stems once plants are 5–8 cm tall, cutting just above the base to encourage regrowth. Whole rosettes can be cut at soil level; new growth will follow. Continue picking as long as temperatures remain cool. Pick before or during early flowering — the flowers are edible and signal peak freshness. Once plants bolt and set seed in warm weather, leaf quality declines.

In the kitchen

Use raw leaves and stems in salads, where the succulent texture and fresh flavour shine. Substitute for spinach in lightly sautéed dishes, soups, or stir-fries — it wilts quickly so add at the last moment. The white flowers make a decorative edible garnish. The entire plant including roots is edible, raw or cooked.

Storing

Store freshly picked claytonia unwashed in a sealed container or plastic bag in the refrigerator for up to 3–5 days. The leaves wilt rapidly at room temperature. For longer preservation, blanch briefly and freeze. Avoid storing near ethylene-producing fruits.