What Flowers Can You Plant in August?

Hunker may earn compensation through affiliate links in this story.
What Flowers Can You Plant in August?

As the heat of late summer wilts people and plants alike, tomatoes and peppers seem to be the only thing thriving in the garden. Among the drought-resistant zinnias and marigolds, though, chrysanthemums are gathering strength. With some prudence and daily watering, August is the perfect time to plant many flowers for autumn color and springtime glory.

Container-Grown Perennials

Peonies rise in late April in a Northern garden

Full-grown chrysanthemum plants will bloom from September until the first hard freeze, and peonies will bloom next spring


Image: Microsoft Office clip art

Plant spring-blooming iris tubers and divisions in August so that they have a chance to develop a strong root system before winter.

Hostas and Daylilies

Trim the leaves of the last hostas and daylilies to bloom before transplanting or dividing them---or plant container-grown plants which are often on sale in August.

Fall-Blooming Crocus

Image: Wikimedia Commons

Plant the precious saffron crocus and its autumnal relatives for blooms from September to November. In mild zones, they may bloom until February.

Spring-Flowering Bulbs

Image: Microsoft Office clip art

The most familiar flowers that bloom in the spring---tulips, daffodils and grape hyacinth---can be planted anytime this month through September.

Spring-Blooming Perennials

Columbines bloom from May through June.

Columbine, violets and other spring perennials should be cut back by half before dividing. The end of August may be a bit late for container-grown plants but overplant with extra sale plants---you can always divide next summer.


Laura Reynolds

An avid perennial gardener and old house owner, Laura Reynolds has had careers in teaching and juvenile justice. A retired municipal judgem Reynolds holds a degree in communications from Northern Illinois University. Her six children and stepchildren served as subjects of editorials during her tenure as a local newspaper editor.