August To Do

AUGUST Gardening To-Do List

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Zone 3

  • Sow seeds of wildflowers, spring-blooming annuals and fall veggies
  • Lift, divide and transplant perennials
  • Plant hardy Oriental and Asiatic lilies
  • Aerate, dethatch and fertilize the lawn
  • Start moving houseplants and other tender plants indoors to acclimatize
  • Pick herbs to dry for winter soups, stews and baking
  • Order trees and shrubs now for fall planting
  • Plan ahead for an extended harvest by building or buying a cold frame
  • Blanch tomatoes for freezing and canning by boiling them for just a few minutes and slipping off the skins
  • Order spring bulbs to forcing
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Zone 4

  • Lift, divide and transplant perennials 
  • Order peonies for fall planting
  • Divide and transplant bearded iris
  • Start moving houseplants and other tender plants indoors to acclimatize
  • Enjoy a case of the late summer “blues” with a palette of aconitum, caryopteris, fall asters and reblooming iris in your planting schemes
  • Blanch tomatoes for freezing and canning by boiling them for just a few minutes and slipping off the skins
  • Plant fall-blooming crocus and colchicum for late-season flowering
  • Prepare beds for planting bulbs and divide any existing bulbs that might be overcrowded
  • Build up weather resistance of trees and shrubs with deep waterings now throughout the fall
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Zone 5

  • Sow seeds of fall vegetables
  • Order peonies for fall planting
  • Divide and transplant bearded iris
  • Plan perennial beds for fall and winter color with ornamental grasses, fall-blooming bulbs and hardy heaths and heathers
  • Harvest vegetables continuously to stretch their season
  • Sprinkle compost starter to speed up composting for fall soil building
  • Prune summer-blooming shrubs (hydrangea, clethra, caryopteris) after flowers finish
  • Plant garlic now for spring harvests
  • Enjoy a case of the late summer “blues” with a palette of hardy ageratum, caryopteris, fall asters and reblooming iris in your planting schemes
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