One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when you can plant heliotrope is to use the USDA zone info for North Richland Hills.

Planting Calendar for Heliotrope

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

It's a bad idea to plant heliotrope until after all chance of frost has passed because they require warm weather.

The earliest that you can plant heliotrope in North Richland Hills 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. Any later than that and your heliotrope may not have a chance to really do well. You can get started a little bit earlier by starting your heliotrope indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in North Richland Hills. In the coldest months of winter you should expect an average low temperature of 10°F.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for North Richland Hills and it can change quite a bit from year to year. Half of the time in North Richland Hills there is a last frost after March 15 so make sure that you are ready to protect your heliotrope in the event of one of those late frosts.

USDA Zone Info for North Richland Hills

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 North Richland Hills

You may be interested in your other planting guides for North Richland Hills.