One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Oberlin you can figure out when it's the best time to plant calla lily by checking out 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.

Since calla lily are not cold tolerant you really should wait until after the last frost before you can plant them.

The earliest that you can plant calla lily in Oberlin 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 fully mature. You can get started a few weeks earlier by starting your calla lily indoors.

Last Frost Date

In Oberlin the average date of last frost happens on April 15. You can expect an average low temperature of -10°F in the coldest months of winter.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Oberlin and it is different every year. Half of the time in Oberlin you get surprised by a frost after April 15 so always be ready to cover your calla lily if you have a surprise late frost.

USDA Zone Info for Oberlin

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 Oberlin

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