One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

A common way of determining when it's a good idea to plant gloriosa lily is to refer to the USDA zone info for New Ulm.

Planting Calendar for Gloriosa Lily

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

Since gloriosa lily are not cold tolerant it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant gloriosa lily in New Ulm 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. You probably don't want to wait any later than that or else your gloriosa lily may not have a chance to fully mature. You can get started a few weeks earlier by starting your gloriosa lily indoors.

Last Frost Date

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

Always keep in mind that USDA zone info for New Ulm may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in New Ulm last frost occurs after May 15 so be sure to be ready to protect your gloriosa lily in the event of a late frost.

USDA Zone Info for New Ulm

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 New Ulm

You may be interested in your other planting guides for New Ulm.