Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. 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 estimating when it's the best time to plant gloriosa lily is to examine the USDA zone info for Grayslake.

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 do not do well in cold weather it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant gloriosa lily in Grayslake 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 gloriosa lily and expect a good harvest is probably August. Any later than that and your gloriosa lily may not have a chance to fully mature. If you are starting your gloriosa lily indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Grayslake the average date of last frost happens on April 15. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Grayslake may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Grayslake there is a last frost after April 15 so just be sure to be ready to cover your gloriosa lily in the event of a late frost.

USDA Zone Info for Grayslake

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Grayslake

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