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

The first chance to plant marigold in Walnut Ridge can be estimated by using the USDA zone info.

Planting Calendar for Marigold

Frost tolerance for marigold:	Not tolerant of frost.
When to plant:	After the last frost.

You really shouldn't plant marigold until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant marigold in Walnut Ridge 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 marigold and expect a good harvest is probably August. Any later than that and your marigold may not have a chance to grow to maturity. Starting your marigold indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Walnut Ridge. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Walnut Ridge is just an average the actual date of last frost is different every year. Half of the time in Walnut Ridge there is a last frost after April 15 so make sure that you are prepared to protect your marigold if you have one of those late frosts.

USDA Zone Info for Walnut Ridge

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Walnut Ridge

You may be interested in your other planting guides for Walnut Ridge.