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

You can estimate when to plant blue lace flowers in Powell by looking at the USDA zone info.

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 tells us that you can plant them just a tiny bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant blue lace flowers in Powell 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. If you wait any later than that and your blue lace flowers may not have a chance to fully mature. If you are starting your blue lace flowers indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Powell is not always accurate the actual date of last frost changes from year to year. Half of the time in Powell you get surprised by a frost after May 15 so just be sure to be ready to cover your blue lace flowers in the event of one of those late frosts.

USDA Zone Info for Powell

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 Powell

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