Gardeners diary for April
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General tips
  • · Mulch any areas not yet planted to prevent early weed growth.

Lawns

  • Rake lawns to remove thatch, and mow when the grass grows well.
  • Sow or turf new lawns and patch bare areas.
  • Feed lawns with blood-fish and bone or a general fertiliser

Containers

  • Plant tubs and hanging baskets with young plants grown in the greenhouse or bought at nurseries.
Beds & Borders

Annuals and biennials

  • Plant sweet peas raised indoors.

Perennials

  • Continue planting greenhouse-reared perennials.
  • Lift and divide large clumps of established plants.

Bulbs

  • Mulch around spikes of growing bulbs and check for slug damage.

Roses

  • Spray roses with bordeaux mixture or black spot control.

 

Shrubs, Trees and Climbers
  • Take greenwood and hardwood cuttings of shrubs and perennials.
  • Prune heathers as they finish flowering.
  • Prune shrubs which have flowered on the previous year's wood, such as forsythia.

Vegetables

  • Plant asparagus crowns, and maincrop potatoes.
  • Plant out aubergines and peppers under cloches.
  • Plant out onion plants grown in the greenhouse.
  • Sow the majority of hardy vegetable seeds, and plant out young leeks in their permanent positions.
  • Plant out globe artichokes raised indoors.
  • Set up canes for runner beans.
  • Sow any outdoor cucumber varieties, leeks, runner beans, squashes and celeriac in the greenhouse.
  • Move vegetables seedlings raised in a heated propagator or greenhouse into an unheated greenhouse to begin hardening off.
  • Sow heat-loving plants such as sweetcorn and runner beans in the greenhouse.
Fruit
  • Remove straw from protected strawberry plants to allow pollinating insects to reach the new blossom.

Greenhouse

  • Plant tomatoes into containers or growing bags.
  • Sow cucumbers for planting under cloches.
  • Sow leeks for planting outside.
  • Start shading greenhouse glass as required.

Herbs

  • Begin sowing herbs of most varieties outdoors.
March
May
 
 
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