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.

In Kosciusko you can figure out when it's the best time to plant helianthemum by referring to the USDA zone info.

Planting Calendar for Helianthemum

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

Since helianthemum do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant helianthemum in Kosciusko 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. Starting your helianthemum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Kosciusko. You should expect an average low temperature of 10°F in the coldest months of winter.

Remember that USDA zone info for Kosciusko is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Kosciusko it frosts late in the year after March 15 so be sure to be ready to protect your helianthemum if you have a surprise late frost.

USDA Zone Info for Kosciusko

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 Kosciusko

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