MARCH

• Top dress newly planted trees and shrubs
• Plant shallots and onion sets. Sow early potatoes
• Dead head early flowering bulbs
• Plant a wild garden
• Lift and divide summer flowering perennials
• Plant new borders
• Start programme of lawn care
• Repot container plants
• Cut back ornamental grasses
• Prune roses
• Pollard shrubs and trees for winter colour
• Continue pruning fully hardy late-summer flowering shrubs
• Under glass, start over-wintered tubers of dahlias by watering and bringing them into the light
• Protect new shoots from slugs, particularly herbaceous plants and clematis