March

Sow in pots in a greenhouse or indoors on a sunny window ledge
Outdoor – tomato seeds in pots
Indoor – cucumber seeds

Sow in the ground
Peas – won’t need protection outside this month. Choose a fast-cropping variety so they are producing in June/July
Broadbeans – sow early this month to crop in the early summer
Carrots – sow a short-rooted variety late in the month in a sheltered spot to lift in July

Plant in the ground
Chitted new potatoes (late in the month)
Pea plants

If container growing
Sow tomato seeds – go for Tumbler or a trailing variety such as Balconi

Harvest
Spinach
Rocket
Spring onions
Lettuce
Radishes