The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Stewartville you should be able to estimate when it's possible to plant blue lace flowers.

Planting Calendar for Blue Lace Flowers

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

Blue Lace Flowers can survive in mild cold which means that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant blue lace flowers in Stewartville 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 blue lace flowers and expect a good harvest is probably August. You probably don't want to wait any later than that or else your blue lace flowers may not have a chance to really do well. You can get started a few weeks earlier by starting your blue lace flowers indoors.

Last Frost Date

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

Since the USDA zone info for Stewartville may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Stewartville last frost occurs after May 15 so make sure that you are prepared to cover your blue lace flowers if you have a surprise late frost.

USDA Zone Info for Stewartville

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 Stewartville

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