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Things to do in your Mapesbury garden in April:

  • Weed, feed and mulch borders with general-purpose fertiliser and organic matter.

  • Apply general-purpose fertiliser around shrubs prior to mulching which will help conserve moisture and deter weeds.

  • Deadhead Spring bulbs before they seed and plant Summer flowering bulbs e.g. Gladiolus.

  • Divide herbaceous perennials and redistribute around garden.

  • Put supports in place for larger perennials. 

  • Tear off Rosa suckers, which can weaken the plant.

  • Tie in climbing and rambling roses.

  • Feed roses in general.

  • Weed and feed the lawn.

  • Plant Evergreens, Perennials, Trees and Shrubs.

  • Remove dead Hydrangea flowers and reduce thin/old shoots on lacecaps and mopheads to lowest bud, to encourage strong, new growth.

  • Prune Spring flowering shrubs that have just flowered e.g. Forsythia stems back to stronger, younger shoots and remove roughly a fifth of older stems at the base to stimulate new growth. Lightly prune Lavender to just above new shoots.

  • Though dead wood is mostly removed from trees and shrubs in Winter, on deciduous shrubs like Philadelphus , it is hard to tell in Winter what is dead wood and what is not, so now the leaves are showing is a good time to do this.

  • Remove around 5cm of old compost from pot plantings and replace with new.

  • Pot on plants that have outgrown their container

Fabian Lee, Mapesbury Professional Gardener & Horticultural Specialist. fabianlee001@gmail.com

(Previous tips;

 Jan,Feb,Mar,Apr,May,June,July,Aug,Sept,Oct,Nov,Dec)