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 USDA zone info for Lone Grove should be reviewed to estimate when it's a good idea to plant helianthemum.

Planting Calendar for Helianthemum

Frost tolerance for helianthemum:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Helianthemum do well in moderate cold which tells us that you can plant them earlier than more sensitive plants.

The earliest that you can plant helianthemum in Lone Grove is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant helianthemum and expect a good harvest is probably September. You probably don't want to wait any later than that or else your helianthemum may not have a chance to really do well. You can get started a few weeks earlier by starting your helianthemum indoors.

Last Frost Date

The average date of last frost is April 15 in Lone Grove. You can expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Lone Grove is just an average the actual date of last frost changes from year to year. Half of the time in Lone Grove there is a last frost after April 15 so make sure that you are ready to cover your helianthemum if you have one of those late frosts.

USDA Zone Info for Lone Grove

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Lone Grove

You may be interested in your other planting guides for Lone Grove.