One of the best tools that you have as gardeners to help us estimate 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.

In Riverton you can estimate when it's the best time to plant torch lilys by using the USDA zone info.

Planting Calendar for Torch Lilys

Frost tolerance for torch lilys:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

You can plant torch lilys much earlier in the year because they are one of those plants that can tolerate quite a bit of cold weather.

The earliest that you can plant torch lilys 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 torch lilys and expect a good harvest is probably August. You probably don't want to wait any later than that or else your torch lilys may not have a chance to fully mature. If you are starting your torch lilys indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Riverton the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Riverton and it can change quite a bit from year to year. Since half of the time in Riverton it frosts late in the year after May 15 be ready to protect your torch lilys 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.