The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant zucchini in Griffith should be figured out by reviewing the USDA zone info.

Planting Calendar for Zucchini

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

It's probably not a good idea to plant zucchini until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant zucchini in Griffith 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. Any later than that and your zucchini may not have a chance to grow to maturity. If you are starting your zucchini indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Griffith. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Griffith may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Griffith it frosts late in the year after April 15 be ready to cover your zucchini if you have a surprise late frost.

USDA Zone Info for Griffith

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 Griffith

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