What to Sow in August for Autumn and Winter Crops

August is a month of abundance in the garden, but it’s also a turning point—a chance to fill empty spaces with fresh crops for harvests later in the year. Sowing in August ensures you’ll continue to enjoy homegrown veg and greens deep into autumn and even through winter. Here’s your guide to the best vegetables, salad crops, and herbs to sow now, plus pro tips for late-summer success.

Why Sow in August?

Make the Most of Your Space:
As early crops finish, bare patches are perfect for sowing fast-growing or overwintering veggies.
Extend Your Harvest:
Many leaves and roots will be ready in autumn; some will overwinter for the earliest spring harvests.
Beat Supermarket Shortages:
Homegrown greens thrive in cool months, while shop salads often disappear!

Top Crops to Sow in August

1. Leafy Greens

Spinach: Choose a winter-hardy variety (‘Giant Winter’, ‘Apollo’).
Rocket (Arugula), Mizuna, Mustard Greens, and Oriental Mixes: Fast growers, perfect for cut-and-come-again harvests.

2. Lettuce & Salad Mix

Look for cold-tolerant types like ‘Winter Density’. Sow direct and water well.

3. Spring Onions and Radishes

Quick and reliable—radishes can be ready in less than 6 weeks from sowing!

4. Swiss Chard & Perpetual Spinach

Sow now for vibrant autumn leaves and again in early spring for a long season.

5. Turnips & Fast Beetroot

Baby turnips and beetroot planted now are sweet, quick to mature, and perfect for roasting or salads.

6. Pak Choi, Tatsoi & Asian Greens

Sown late, these are less likely to bolt and are ideal for stir-fries.

7. Spring Cabbage

Sow direct for early greens next year; transplant to their final spot before autumn.

8. Overwintering Onions & Garlic

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March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.

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Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉 Click here to see top options

Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉 Click here to see top options

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Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉 Click here to see top options

In milder regions, start overwintering onions (‘Senshyu’, ‘Radar’) in late August.

9. Coriander, Parsley, and Chervil (Herbs)

Enjoy a flush of fresh leaves before frost and harvest again in spring.

Sowing & Care Tips for August

Keep Soil Moist: August can be hot—water sowings regularly until established.
Shade New Seedlings: Use fleece or fine mesh if the sun is fierce.
Thin Seedlings Early: To avoid crowding and disease as growth speeds up in cooler nights.
Use Netting: Protect against late cabbage white butterflies and pigeons, especially for brassicas.

Bonus Picks for Greenhouses & Cold Frames

Try September sowings of carrots, parsley, and salad leaves under cover for extra-early spring growth.

Quick Start, Long Finish

Many August-sown crops can be enjoyed young as baby leaves, roots, or shoots. With a little planning, you’ll keep the harvests coming far beyond summer—right through autumn and to the very first days of spring.

Love your autumn table?
Start sowing now and enjoy the taste of late-season success—August isn’t the end, it’s your new beginning!

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