March is the busiest sowing month in UK gardens, with over 40 vegetables, flowers, and herbs ready to start. Sow tomatoes, peppers, and aubergines indoors at 18-21C. Direct sow broad beans, peas, and parsnips outdoors once soil reaches 7C. Plant first early potatoes from mid-March in southern England, late March in the north. Hardy annuals like sweet peas and calendula can go straight into prepared beds.
Key takeaways
- Over 40 crops can be sown or planted in March across UK gardens
- Sow tomatoes, peppers, and chillies indoors at 18-21C for summer harvests
- Direct sow broad beans, peas, and parsnips outdoors when soil hits 7C
- Plant first early potatoes mid-March in the south, late March in the north
- Hardy annuals like sweet peas go directly into prepared outdoor beds
- March sowings produce crops from June through to October
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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.
