The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Herndon should be reffered to in order to figure out when you can plant fanflower.

Planting Calendar for Fanflower

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

It's probably a bad idea to plant fanflower until after the last frost because they do not do well in cold weather.

The earliest that you can plant fanflower in Herndon 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 fanflower and expect a good harvest is probably August. If you wait any later than that and your fanflower may not have a chance to grow to maturity. Starting your fanflower indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Herndon and it changes from year to year. Half of the time in Herndon last frost occurs after April 15 so be sure to be ready to protect your fanflower in the event of a surprise late frost.

USDA Zone Info for Herndon

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 Herndon

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