The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can estimate when it's a good idea to plant calla lily in Northampton 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 when the weather gets warmer.

Calla Lily do not do well in cold weather which tells us that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant calla lily in Northampton 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. If you wait any later than that and your calla lily may not have a chance to really do well. You can get started a couple of weeks earlier by starting your calla lily indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Northampton. It might get as low as -10°F during the coldest months of winter.

Keep in mind that USDA zone info for Northampton is an average and the actual date of last frost is different every year. Since half of the time in Northampton you get a frost after April 15 be ready to protect your calla lily in the event of a surprise late frost.

USDA Zone Info for Northampton

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 Northampton

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