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.

A way of getting a good idea when it's the best time to plant zucchini is to consult the USDA zone info for Columbia City.

Planting Calendar for Zucchini

Frost tolerance for zucchini:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Zucchini do not do well in cold weather which tells us that it is necessary to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant zucchini in Columbia City 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 zucchini and expect a good harvest is probably August. If you wait any later than that and your zucchini may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your zucchini indoors.

Last Frost Date

The average date of last frost is April 15 in Columbia City. You can expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Columbia City is not always accurate and the actual date of last frost is different every year. Half of the time in Columbia City it frosts late in the year after April 15 so always be ready to cover your zucchini if you have one of those late frosts.

USDA Zone Info for Columbia City

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Columbia City

You may be interested in your other planting guides for Columbia City.