One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant gloriosa lily in Crookston can be estimated by looking at the USDA zone info.

Planting Calendar for Gloriosa Lily

Frost tolerance for gloriosa lily:	Not tolerant of frost.
When to plant:	After the last frost.

Since gloriosa lily are not cold tolerant you really should wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant gloriosa lily 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 gloriosa lily and expect a good harvest is probably August. Any later than that and your gloriosa lily may not have a chance to really do well. If you are starting your gloriosa lily indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Crookston the average date of last frost happens on May 15. You should expect an average low temperature of -30°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Crookston and it can change quite a bit from year to year. Since half of the time in Crookston last frost occurs after May 15 be ready to protect your gloriosa lily 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.