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

In Clayton you can estimate when to plant marigold 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.

It's not a good idea to plant marigold until after the last frost has passed because they require warm weather.

The earliest that you can plant marigold in Clayton 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. You probably don't want to wait any later than that or else your marigold may not have a chance to grow to maturity. If you are starting your marigold indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Clayton. In the coldest months of winter you can expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Clayton may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Clayton last frost occurs after April 15 so always be ready to cover your marigold if you have a surprise late frost.

USDA Zone Info for Clayton

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Clayton

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