You can start your tomato sowing from the end of February to mid-March. To succeed in your tomato sowing, you will absolutely need heat, indeed, Solanaceae seeds (Tomatoes, aubergines, peppers, peppers) will only germinate at a minimum temperature of 20°C day and night.  Fill your buckets  of sowing compost, insert the seeds a few mm deep then cover with compost.  Water your buckets well without the soil being soggy either.  Place your cups under  light and at a temperature of 20°C. 

When the shoots have released their first two leaves, they are transplanted into individual pots and always kept warm.

When frosts are no longer to be feared, transplanting is possible by  June (when the plants have reached 12 to 15 cm) keeping a spacing of 1 m between the rows - 0.5 m between the plants. Plant the seedlings in an open, bright and airy place. The soil must be amended but reasonably, homemade compost buried in the spring will be ideal.