One of the best tools that you have as gardeners to help us determine 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 first opportunity to plant doronicum in Riverton should be determined by looking at 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.

Doronicum do ok in some cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant doronicum in Riverton 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. If you wait any later than that and your doronicum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your doronicum indoors.

Last Frost Date

The average date of last frost is April 15 in Riverton. In the coldest months of winter you should expect an average low temperature of 0°F.

Just be sure to remember that USDA zone info for Riverton is just an average and the actual date of last frost will vary from year to year. Half of the time in Riverton you get surprised by a frost after April 15 so just be sure to be ready to cover your doronicum in the event of one of those late frosts.

USDA Zone Info for Riverton

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 Riverton

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