One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when it's possible to plant sunflowers by referring to the USDA zone info for Yorktown.

Planting Calendar for Sunflowers

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

Since sunflowers are not cold tolerant it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant sunflowers in Yorktown 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 really do well. Starting your sunflowers indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Yorktown. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Yorktown may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Yorktown there is a last frost after April 15 so be sure to be ready to protect your sunflowers in the event of a surprise late frost.

USDA Zone Info for Yorktown

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Yorktown

You may be interested in your other planting guides for Yorktown.