Seed sowing timing in the UK depends on whether you are sowing indoors or outdoors, and when your last frost date is (typically late April in most of the UK).
Chillies, aubergines and early tomatoes under heat. Most seeds sown this early need a heated propagator.
Tomatoes, cucumbers, courgettes, squash (indoors). Peas, broad beans, lettuce, radishes, spinach (outdoors, direct or under fleece).
Direct sow: runner beans, French beans, beetroot, carrots, sweetcorn. Plant out: tomatoes, courgettes, cucumbers (after last frost).
Lettuce and salad leaves every 3-4 weeks for continuous harvest. Quick-maturing crops: radishes, spring onions, spinach.
Track all sow dates with our free seed sowing planner.