One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant stoneseed in Casper can be estimated by looking at the USDA zone info.

Planting Calendar for Stoneseed

Frost tolerance for stoneseed:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since stoneseed require warm weather you need to wait until after the last frost before you can plant them.

The earliest that you can plant stoneseed in Casper is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant stoneseed and expect a good harvest is probably August. If you wait any later than that and your stoneseed may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your stoneseed indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Casper. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Casper is an average the actual date of last frost can change quite a bit from year to year. Half of the time in Casper you get a frost after April 15 so make sure that you are prepared to protect your stoneseed if you have one of those late frosts.

USDA Zone Info for Casper

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Casper

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