August Horticulture Tips from OSU Extension Sevice

The Tulsa County OSU Extension Service offers the following horticulture tips for August compliments of the O.S.U. Department of Horticulture and Landscape Architecture. For more information contact the OSU Extension Master Gardeners at 746-3701.


  • Start the fall vegetable garden by planting bush beans, cucumbers, summer squash, beets, broccoli, carrots, potatoes, lettuce, etc.
  • Soak vegetable seeds overnight prior to planting. Once planted, cover them with compost to avoid soil crusting. Mulch to keep planting beds moist to keep soil cool. Monitor plants for flea beetles and other pests until they get established. Some gardeners use a lightweight fabric row cover to screen out early season pests.

Fruit Trees:

  • Continue protective insecticide applications to apples and late peaches. Follow directions on the label as to the number of days to wait before harvest.


  • In late August divide and replant spring blooming perennials such as iris, peonies and daylilies if overcrowded. Be sure to replant at the same depth at which they grew. Peonies must not be planted too deep, or they will not re-bloom.

Trees and Shrubs:

  • Discontinue deadheading roses by mid-August to help initiate winter hardiness.
  • Continue frequent watering of newly-established trees and shrubs. Roots will not have grown far enough outside the original root ball to survive extreme drought.
  • Maples may leaf-scorch this month due to hot, dry winds. Make sure they are watered regularly.


Updated 07-25-2005

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