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.

In Granville you can figure out when it's the best time to plant marigold by looking at the USDA zone info.

Planting Calendar for Marigold

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

Marigold require warm weather which tells us that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant marigold in Granville 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 fully mature. Starting your marigold indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Granville. In the coldest months of winter you should expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Granville is just an average and the actual date of last frost changes from year to year. Since half of the time in Granville it frosts late in the year after April 15 be ready to protect your marigold if you have a surprise late frost.

USDA Zone Info for Granville

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 Granville

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