One of the first steps you take when you are estimating your gardening schedule is find your 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.

One way of figuring out when it's possible to plant zucchini is to examine the USDA zone info for Litchfield.

Planting Calendar for Zucchini

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

Zucchini do not do well in cold weather which means that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant zucchini in Litchfield is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant zucchini and expect a good harvest is probably August. Any later than that and your zucchini may not have a chance to really do well. If you are starting your zucchini indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Litchfield. In the coldest months of winter you should expect an average low temperature of -25°F.

Just be sure to remember that USDA zone info for Litchfield is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Litchfield you get surprised by a frost after May 15 be ready to protect your zucchini if you have a surprise late frost.

USDA Zone Info for Litchfield

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Litchfield

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