One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. 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 Brecksville can be looked at to determine when you can plant helianthemum.

Planting Calendar for Helianthemum

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

Since helianthemum are moderately cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant helianthemum in Brecksville 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. Any later than that and your helianthemum may not have a chance to grow to maturity. If you are starting your helianthemum indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Brecksville. In the coldest months of winter you should expect an average low temperature of -10°F.

Keep in mind that USDA zone info for Brecksville is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Brecksville last frost occurs after April 15 so just be sure to be ready to protect your helianthemum in the event of one of those late frosts.

USDA Zone Info for Brecksville

Here is the info for USDA Zone 6a.

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

Plants to Grow in Brecksville

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