August Garden Calendar

— Written By

Plants in Flower 
  • Crapemyrtle, Rose-of-Sharon, Peegee Hydrangea, Abelia, Canna, Dahlia, Trumpet Creeper, Cardinal Flower, Butterfly Weed, Phlox, Cleome, Hosta, Liriope and summer annuals

Fertilizing 

  • Strawberries will benefit from a feeding of nitrogen fertilizer this month.
  • Do NOT fertilize shrubs in August, September, October or November.

Planting 

  • Plant pansy seed this month in flats for planting in the landscape in September.
  • Spider lily (lycoris), colchicum (autumn crocus) and sternbergia bulbs should be planted in August.
  • Sow seed of the following perennials: hollyhock, delphinium and stokesia to produce healthy plants for next spring.
  • Continue repotting house plants.
  • Plant the following fall vegetable plants this month: beets, Chinese cabbage, cucumber, kale, kohlrabi, lettuce, mustard, radish, rutabaga, spinach, squash and turnip.

Pruning

  • Do not prune shrubs in August, September, or October.

Spraying 

  • Peach and nectarine trees need a trunk spray for peach tree borers at the end of August.
  • Spray the following fall vegetables for insects: broccoli, cabbage, and cauliflower (worms), squash (borers).
  • Continue weekly sprays on bunch grapes and tree fruits.
  • Control the following woody weeds by spraying them with the recommended herbicide: greenbriar, kudzu, trumpet creeper and wisteria.

Lawn Care 

  • Treat if needed lawn areas for grubs. Use the recommended insecticides.
  • In late August, prepare the lawn areas for seeding if you plan to have a tall fescue or bluegrass lawn.

Propagation 

  • Cuttings of your favorite shrubs can still be taken in August.

Specific Chores 

  • If you are planning to do some fall landscape planting, be sure you have a planting plan prepared.
  • Dig Irish potatoes this month