One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Riverton you can estimate when to plant forget-me-not by using the USDA zone info.

Planting Calendar for Forget-Me-Not

Frost tolerance for forget-me-not:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since forget-me-not are moderately cold tolerant you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant forget-me-not in Riverton is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant forget-me-not and expect a good harvest is probably August. You probably don't want to wait any later than that or else your forget-me-not may not have a chance to grow to maturity. You can get started a little bit earlier by starting your forget-me-not indoors.

Last Frost Date

The average date of last frost is May 15 in Riverton. It might get as low as -25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Riverton is an average and the actual date of last frost is different every year. Half of the time in Riverton last frost occurs after May 15 so make sure that you are prepared to cover your forget-me-not in the event of one of those late frosts.

USDA Zone Info for Riverton

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Riverton

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