Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Black Mountain should be reviewed to determine when it's possible to plant heliotrope.

Planting Calendar for Heliotrope

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

It's not a good idea to plant heliotrope until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant heliotrope in Black Mountain 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 heliotrope and expect a good harvest is probably August. If you wait any later than that and your heliotrope may not have a chance to fully mature. Starting your heliotrope 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 Black Mountain. In the coldest months of winter you can expect an average low temperature of 0°F.

Always keep in mind that USDA zone info for Black Mountain is an average and the actual date of last frost is different every year. Since half of the time in Black Mountain you get surprised by a frost after April 15 be ready to protect your heliotrope if you have a late frost.

USDA Zone Info for Black Mountain

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 Black Mountain

You may be interested in your other planting guides for Black Mountain.