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.

By looking at the USDA zone info for Athens it's possible to determine when to plant bidens.

Planting Calendar for Bidens

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

Since bidens do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant bidens in Athens 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 bidens and expect a good harvest is probably August. Any later than that and your bidens may not have a chance to fully mature. Starting your bidens indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Athens. In the coldest months of winter you should expect an average low temperature of 10°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Athens and it can change quite a bit from year to year. Since half of the time in Athens you get surprised by a frost after March 15 be ready to protect your bidens if you have one of those late frosts.

USDA Zone Info for Athens

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Athens

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