One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's a good idea to plant cleome is to examine the USDA zone info for Oklahoma City.

Planting Calendar for Cleome

Frost tolerance for cleome:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant cleome until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant cleome in Oklahoma City is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant cleome and expect a good harvest is probably August. If you wait any later than that and your cleome may not have a chance to really do well. You can get started a little bit earlier by starting your cleome indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Oklahoma City. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Oklahoma City is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Oklahoma City it frosts late in the year after April 15 so make sure that you are ready to protect your cleome in the event of a surprise late frost.

USDA Zone Info for Oklahoma City

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Oklahoma City

You may be interested in your other planting guides for Oklahoma City.