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.

It's a good idea to estimate when to plant heliotrope by looking at the USDA zone info for Harker Heights.

Planting Calendar for Heliotrope

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

Heliotrope require warm weather which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant heliotrope in Harker Heights 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 really do well. You can get started a few weeks earlier by starting your heliotrope indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Harker Heights. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Harker Heights is just an average the actual date of last frost changes from year to year. Half of the time in Harker Heights there is a last frost after March 15 so always be ready to cover your heliotrope in the event of a surprise late frost.

USDA Zone Info for Harker Heights

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Harker Heights

You may be interested in your other planting guides for Harker Heights.