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.

The USDA zone info for Dearborn should be reviewed to figure out when it's possible to plant calla lily.

Planting Calendar for Calla Lily

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

It's a bad idea to plant calla lily until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant calla lily in Dearborn 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. You probably don't want to wait any later than that or else your calla lily may not have a chance to really do well. You can get started a little bit earlier by starting your calla lily indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Dearborn. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Dearborn is an average the actual date of last frost changes from year to year. Half of the time in Dearborn you get a frost after April 15 so just be sure to be ready to protect your calla lily if you have a surprise late frost.

USDA Zone Info for Dearborn

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Dearborn

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