When can I sow tomato seeds?
James Craig
Updated on May 18, 2026
Also to know is, what month do you plant tomato seeds?
Sow your tomato seeds in March or April, approximately 6-8 weeks before the final frost of the winter, or earlier if you're growing your tomatoes in a greenhouse. Sprinkle the seed thinly onto good quality seed compost.
Subsequently, question is, when should I start planting tomato seeds indoors? Often, the advice is to sow tomatoes indoors eight to ten weeks before your last frost date where you live. The problem often cited with sowing too early is that the seedlings may struggle to get enough light. This can make them leggy and weak.
Just so, is it too late to start tomato seeds?
Definitely not. You can plant tomato seeds anytime in the spring. Many people around here don't sow them until April, as they are fast germinators and fast growers.
When can I sow tomato seeds UK?
Sowing Period UK
Sow seed indoors around the middle of March to the end of April if you intend to grow your tomatoes outside. For growing in a cold greenhouse, seeds may be sown at the end of February – indoors of course!