One of the first steps you take when you are figuring out 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.

The USDA zone info for Rock Hill should be looked at to figure out when it's the best time to plant melampodium.

Planting Calendar for Melampodium

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

You should not plant melampodium until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant melampodium in Rock Hill 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 melampodium and expect a good harvest is probably August. If you wait any later than that and your melampodium may not have a chance to really do well. You can get started a few weeks earlier by starting your melampodium indoors.

Last Frost Date

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

Since the USDA zone info for Rock Hill is just an average the actual date of last frost is different every year. Half of the time in Rock Hill there is a last frost after March 15 so make sure that you are ready to protect your melampodium if you have a surprise late frost.

USDA Zone Info for Rock Hill

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 Rock Hill

You may be interested in your other planting guides for Rock Hill.