Don't be caught out sowing tomato seeds too early or planting broccoli that runs up to seed. Use Diggers 'Sow what when' wall poster. From artichoke to zucchini, complete with our growing days map and instructions for sowing indoors or outside, months to sow and spacing.

All the information you need to become a seed sowing expert. Hang in the garden shed, study or on the fridge.

• 42cm x 59cm coated poster