Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of getting a good idea when to plant twinspur is to check out the USDA zone info for Rice Lake.

Planting Calendar for Twinspur

Frost tolerance for twinspur:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Twinspur can survive in mild cold which means that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant twinspur in Rice Lake 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 twinspur and expect a good harvest is probably August. Any later than that and your twinspur may not have a chance to fully mature. You can get started a little bit earlier by starting your twinspur indoors.

Last Frost Date

The average date of last frost is May 15 in Rice Lake. It might get as low as -30°F during the coldest months of winter.

It's important to remember that USDA zone info for Rice Lake is an average and the actual date of last frost will vary from year to year. Half of the time in Rice Lake there is a last frost after May 15 so make sure that you are prepared to cover your twinspur in the event of one of those late frosts.

USDA Zone Info for Rice Lake

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Rice Lake

You may be interested in your other planting guides for Rice Lake.