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

You will be able to determine when to plant helianthemum by reviewing the USDA zone info for Linden.

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 means that you can plant them earlier than other frost tender plants.

The earliest that you can plant helianthemum in Linden 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. If you wait any later than that and your helianthemum may not have a chance to really do well. If you are starting your helianthemum indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Linden. You can expect an average low temperature of 0°F in the coldest months of winter.

It's important to remember that USDA zone info for Linden is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Linden you get surprised by a frost after April 15 be ready to cover your helianthemum if you have a surprise late frost.

USDA Zone Info for Linden

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 Linden

You may be interested in your other planting guides for Linden.