One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to figure out when it's possible to plant calla lily by referring to the USDA zone info for South Haven.

Planting Calendar for Calla Lily

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

You really shouldn't plant calla lily until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant calla lily in South Haven 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 grow to maturity. 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 South Haven. It might get as low as -5°F during the coldest months of winter.

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

USDA Zone Info for South Haven

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 South Haven

You may be interested in your other planting guides for South Haven.