Bob’s top tips for the week
1 Buy and/or sow French marigolds, pot them up or plant by a greenhouse door and near tomatoes to keep whitefly away.
2 Sow sweetcorn outdoors and protect them with open-ended tubes made from plastic bottles. The bottles also assist watering and earthing up.
3 Sow clumps of buckwheat, crimson clover, Phacelia tanacetifolia and pot marigolds in small clumps to attract beneficial insects throughout the summer.
4 Tell neighbours you’re a spider sanctuary and to bring any they catch into your greenhouse! They feast on pests and never hurt plants.