The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Riverton you should be able to determine when it's possible to plant anise.

Planting Calendar for Anise

Frost tolerance for anise:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Anise do ok in very little 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 anise in Riverton 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 anise and expect a good harvest is probably August. Any later than that and your anise may not have a chance to fully mature. You can get started a little bit earlier by starting your anise indoors.

Last Frost Date

In Riverton the average date of last frost happens on May 15. It might get as low as -25°F during the coldest months of winter.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Riverton and it will vary from year to year. Half of the time in Riverton there is a last frost after May 15 so just be sure to be ready to cover your anise if you have 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.