The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Barnwell you can figure out when you can plant doronicum by reviewing the USDA zone info.

Planting Calendar for Doronicum

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

You can plant doronicum a little earlier in the year because they are moderately cold tolerant.

The earliest that you can plant doronicum in Barnwell 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 doronicum and expect a good harvest is probably September. Any later than that and your doronicum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your doronicum indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Barnwell. You should expect an average low temperature of 10°F in the coldest months of winter.

It's important to remember that USDA zone info for Barnwell is an average and the actual date of last frost will vary from year to year. Half of the time in Barnwell there is a last frost after March 15 so make sure that you are prepared to cover your doronicum in the event of a surprise late frost.

USDA Zone Info for Barnwell

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 Barnwell

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