Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant cosmos in Anderson can be figured out by looking at the USDA zone info.

Planting Calendar for Cosmos

Frost tolerance for cosmos:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Cosmos do well in very little cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant cosmos in Anderson is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant cosmos and expect a good harvest is probably August. You probably don't want to wait any later than that or else your cosmos may not have a chance to fully mature. Starting your cosmos indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Anderson is just an average and the actual date of last frost will vary from year to year. Half of the time in Anderson you get surprised by a frost after March 15 so be sure to be ready to cover your cosmos if you have a surprise late frost.

USDA Zone Info for Anderson

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 Anderson

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