Before planting it is a good idea to find your USDA Zone info to estimate 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.

In Wilmington you can determine when it's possible to plant calla lily by looking at the USDA zone info.

Planting Calendar for Calla Lily

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

Since calla lily require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant calla lily in Wilmington 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 calla lily and expect a good harvest is probably August. Any later than that and your calla lily may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your calla lily indoors.

Last Frost Date

The average date of last frost is March 15 in Wilmington. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Wilmington is an average the actual date of last frost is different every year. Half of the time in Wilmington you get surprised by a frost after March 15 so just be sure to be ready to protect your calla lily if you have one of those late frosts.

USDA Zone Info for Wilmington

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

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

Plants to Grow in Wilmington

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