In August, after weeks of warm weather, the garden might not be looking its best. Annuals such as cornflowers and poppies have started to set seed; lupins, delphiniums and geraniums are past their first flush.
But as the season starts to shift towards late-summer, there's still plenty to do on your plot – and with early-flowering plants and spring-sown crops over, there may be some space in the soil to sow...
Here's what fast-growing and cold-tolerant vegetables (for harvests through autumn and into winter) to grow now:
Radishes
"If you want fast results, plant radishes. Some varieties are ready in only three or four weeks," says Loren Taylor of Soothing Company.
Choose a sunny spot with loose, moisture-retentive soil, and sow small batches every ten to fourteen days for a steady supply. Keep seedlings well watered, as dry conditions can make roots woody, hot or prone to splitting. Thin plants early so each root has room to develop. Flea beetles may pepper the leaves with holes, so use fine mesh if they are troublesome. Harvest promptly while roots are crisp and tender, before they become too oversized or pithy.
Kale
"Kale may still be worth planting if you live in a place with mild winters," says Loren, "Cold weather can make its leaves taste sweeter. Choose a hardy variety (like Winterbor, Thousandhead, and Nero di Toscana) and protect young plants if heavy frost is expected."
Lamb’s lettuce
Lamb’s lettuce is one of the best leaves to sow in August for winter salads. "Salad leaves and loose-leaf lettuce are some of the easiest choices," agrees Loren, "They can be ready in four to six weeks and often grow better in cooler weather. Pick the outer leaves first and allow the middle of the plant to continue growing."
Sow thinly in shallow rows, either in open ground, containers or beneath greenhouse crops. Keep the soil moist, but avoid water-logging. Plants grow slowly, forming neat rosettes of soft, nutty-tasting leaves. Harvest whole rosettes or pick individual leaves as needed from autumn onwards. In exposed gardens, protect plants with fleece or cloches, although this hardy crop tolerates cold remarkably well once firmly established.
Carrots
August is the last reliable month to sow carrots for an autumn crop, especially if you choose fast-maturing (like Nantes or Chantenay) or baby varieties (such as French Little Finger and Thumbelina). Pick a sunny, well-drained patch and rake the soil to a fine texture, removing stones that may cause roots to fork. Sow thinly in shallow drills, water gently and keep the bed consistently moist while seedlings establish. Thin carefully to avoid attracting carrot fly, and cover crops with insect-proof mesh where possible. Roots may be ready from October onwards, depending on the variety and weather. In colder areas, lift before hard frosts or protect the crop successfully with straw.
Chinese cabbage
Chinese cabbage is well suited to August sowing because cooler, shortening days reduce the risk of bolting. Sow seeds directly into fertile, moisture-retentive soil, or start them in modules for planting out later. Space plants generously so they can form firm, leafy heads, and water regularly to prevent stress and bitter leaves. Protect young seedlings from slugs, snails and flea beetles. Depending on the variety, crops can be harvested as loose leaves, tender baby plants or mature heads from autumn into early winter. Use the crisp leaves in stir-fries, salads, soups and ferments such as homemade kimchi (your gut biome will thank you later…).
Beetroot
Sow beetroot in early August for a late crop of small, sweet roots and colourful leaves. Fast-growing varieties are the safest choice, particularly in cooler regions where the season is shorter. Make shallow drills in fertile, well-drained soil, sow sparingly and water thoroughly.
Once seedlings appear, thin them to allow the roots room to swell; the thinnings can be eaten as baby leaves. Keep the soil evenly moist during dry weather to prevent woody growth or splitting. Harvest young roots from autumn, before severe frosts arrive. In milder areas, protect plants with fleece and continue lifting into early winter too.
Swiss chard
Swiss chard sown in August can provide tender baby leaves in autumn and larger harvests through winter and into spring. Sow seeds directly into rich, moisture-retentive soil, or raise plants in modules before transplanting. Thin seedlings well, as mature plants need space to produce broad leaves and sturdy, colourful stems. Water during dry spells and protect young growth from slugs and snails. Pick outer leaves regularly, leaving the central crown intact so the plant continues producing. Chard is hardy, but fleece or a cloche will help it through prolonged cold spells. Use the leaves like spinach and cook the stems separately.
Final thoughts
Loren advises: "Always check the seed packet to make sure you choose a type that can grow in cold weather. Summer varieties may die in the frost, but winter varieties are stronger and can survive lower temperatures. Before planting, find out when the first frost usually arrives in your area. Then check the number of growing days shown on the seed packet. If a vegetable needs more time than you have left, save it for spring.
"My advice is to start small and plant just a few short rows. Keep the soil lightly moist, pull out any weeds, and cover young plants when heavy frost is expected. Even a small winter harvest can feel special. Picking a handful of fresh spinach or a few crisp radishes on a cold day is a lovely reminder that the garden still has something to give."
Summer gardening edit
John Lewis VegTrug
Metal Square Digging Spade
