Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Sand Springs you can figure out when you can plant sunflowers by referring to the USDA zone info.

Planting Calendar for Sunflowers

Frost tolerance for sunflowers:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably a bad idea to plant sunflowers until after the last frost because they require warm weather.

The earliest that you can plant sunflowers in Sand Springs 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 sunflowers and expect a good harvest is probably August. Any later than that and your sunflowers may not have a chance to fully mature. If you are starting your sunflowers indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Sand Springs. It might get as low as 0°F during the coldest months of winter.

Since the USDA zone info for Sand Springs is not always accurate the actual date of last frost changes from year to year. Since half of the time in Sand Springs you get surprised by a frost after April 15 be ready to protect your sunflowers in the event of one of those late frosts.

USDA Zone Info for Sand Springs

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 Sand Springs

You may be interested in your other planting guides for Sand Springs.