Before planting it is a good idea to find your USDA Zone info to figure out 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 making a decision about when to plant calla lily is to check out the USDA zone info for Berkley.

Planting Calendar for Calla Lily

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

It's a bad idea to plant calla lily until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant calla lily in Berkley 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 really do well. Starting your calla lily indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Berkley. You should expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Berkley is just an average and the actual date of last frost will vary from year to year. Half of the time in Berkley you get a frost after April 15 so always be ready to protect your calla lily in the event of one of those late frosts.

USDA Zone Info for Berkley

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Berkley

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