One of the best tools that you have as gardeners to help us estimate 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.

A common way of determining when it's a good idea to plant sunflowers is to use the USDA zone info for Morgantown.

Planting Calendar for Sunflowers

Frost tolerance for sunflowers:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

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

The earliest that you can plant sunflowers in Morgantown 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. If you are starting your sunflowers indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Morgantown. You can expect an average low temperature of -5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Morgantown is just an average and the actual date of last frost is different every year. Half of the time in Morgantown you get a frost after April 15 so always be ready to cover your sunflowers if you have a late frost.

USDA Zone Info for Morgantown

Here is the info for USDA Zone 6b.

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

Plants to Grow in Morgantown

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