One of the best tools that you have as gardeners to help us estimate 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.

By looking at the USDA zone info for Richland it's a good idea to estimate when it's possible to plant zucchini.

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 a bad idea to plant zucchini until after the last frost has passed because they require warm weather.

The earliest that you can plant zucchini in Richland 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. You probably don't want to wait any later than that or else your zucchini may not have a chance to really do well. You can get started a couple of weeks earlier by starting your zucchini indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Richland. In the coldest months of winter you can expect an average low temperature of 0°F.

It's important to remember that USDA zone info for Richland is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Richland there is a last frost after April 15 so make sure that you are prepared to cover your zucchini in the event of one of those late frosts.

USDA Zone Info for Richland

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Richland

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