The UK seed sowing season runs from January to October, peaking in March and April when over 60 different vegetables, flowers, and herbs can be started. January and February focus on indoor sowings: onions, chillies, and sweet peas. March adds tomatoes, peppers, broad beans, peas, and parsnips. April opens outdoor sowing for carrots, beetroot, and hardy annuals. May allows tender crops outdoors after the last frost.
Key takeaways
- Over 60 different crops can be started from seed in March and April alone
- January-February: start slow growers like onions, chillies, and sweet peas indoors
- March: the biggest sowing month for vegetables, with 20+ crops to start
- May-June: sow tender crops outdoors and start biennials for next year
- July-August: sow winter vegetables and overwintering crops for year-round harvests
seed sowing planting calendar sowing times vegetables flowers herbs seasonal gardening
Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
