April is the transition month in UK gardens, with soil temperatures rising above 10C across southern England and 7-8C in the north. Over 30 vegetables, flowers, and herbs can be sown or planted. Direct sow carrots, beetroot, turnips, radish, and spinach outdoors. Continue indoor sowings of courgettes, squash, and sweetcorn. Plant second early and maincrop potatoes. Hardy annual flowers go directly into borders. Half-hardy annuals remain indoors until late May.
Key takeaways
- Over 30 crops can be sown or planted in April across UK gardens
- Direct sow carrots, beetroot, radish, and spinach outdoors once soil reaches 10C
- Plant second early potatoes in early April and maincrops from mid-April
- Start courgettes, squash, and sweetcorn indoors for late May planting out
- Hardy annual flowers like calendula and cornflowers go directly into borders
- Do not plant tender crops outdoors until after the last frost in late May
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Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
