The Oklahoma State University Extension Service provides the following gardening tips for August in Oklahoma:

August is a good month to start your fall vegetable garden. Bush beans, cucumbers, and summer squash can be replanted for another crop. Beets, broccoli, carrots, potatoes, lettuce, and other cool-season crops can also be planted at this time.

Soak vegetable seed overnight prior to planting. Once planted, cover them with compost to avoid soil crusting. Mulch to keep planting bed moist and provide shade during initial establishment. Monitor and control insect pests that prevent a good start of plants in your fall garden.

Continue protective insect applications on the fruit orchard. A good spray schedule is often abandoned too early. Follow directions on last application prior to harvest.

owards the end of the month, divide and replant spring-blooming perennials like iris, peonies, and daylilies if needed.

Discontinue deadheading roses by mid-August to help initiate winter hardiness.

See more at agriculture.okstate.edu