One of the first steps you take when you are determining your gardening schedule is find your 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 twinspur in Grand Rapids can be estimated by looking at the USDA zone info.

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 Grand Rapids 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. You probably don't want to wait any later than that or else your twinspur may not have a chance to grow to maturity. Starting your twinspur indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Grand Rapids. In the coldest months of winter you should expect an average low temperature of -35°F.

Keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Grand Rapids and it changes from year to year. Half of the time in Grand Rapids last frost occurs after May 15 so be sure to be ready to protect your twinspur if you have a late frost.

USDA Zone Info for Grand Rapids

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Grand Rapids

You may be interested in your other planting guides for Grand Rapids.