One of the first steps you take when you are determining your gardening schedule is find your 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.

You can determine when it's the best time to plant sunflowers in Hopewell by looking at 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.

Since sunflowers are not cold tolerant it is important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant sunflowers in Hopewell 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. If you wait any later than that and your sunflowers may not have a chance to fully mature. Starting your sunflowers indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Hopewell. In the coldest months of winter you should expect an average low temperature of 5°F.

Since the USDA zone info for Hopewell is an average the actual date of last frost changes from year to year. Half of the time in Hopewell you get a frost after April 15 so just be sure to be ready to protect your sunflowers if you have a late frost.

USDA Zone Info for Hopewell

Here is the info for USDA Zone 7b.

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

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

Plants to Grow in Hopewell

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