In his weekly Jamie’s Little Allotment column, gardener Jamie Marsh discusses summer sowing and something which has truly changed his gardening life… July is the perfect growing month, long warm days stretch out late into the evening. With the allotment now starting to fill with lovely produce and the borders are full of flowers, you might be thinking it’s too late to sow anything now, but you would be so wrong. There’s so much we can still sow in the allotment to keep the harvest going as long as possible. As I’ve said a few times before, successional sowing is a must if you want constant f…