The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Crookston should be read to estimate when it's a good idea to plant painted tongues.

Planting Calendar for Painted Tongues

Frost tolerance for painted tongues:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Painted Tongues require warm weather which means that you have to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant painted tongues in Crookston is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant painted tongues and expect a good harvest is probably August. If you wait any later than that and your painted tongues may not have a chance to grow to maturity. If you are starting your painted tongues indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Crookston. In the coldest months of winter you can expect an average low temperature of -30°F.

Since the USDA zone info for Crookston is just an average the actual date of last frost will vary from year to year. Since half of the time in Crookston it frosts late in the year after May 15 be ready to cover your painted tongues in the event of one of those late frosts.

USDA Zone Info for Crookston

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 Crookston

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