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

A way of determining when it's a good idea to plant marigold is to check out the USDA zone info for Appleton.

Planting Calendar for Marigold

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

It's a bad idea to plant marigold until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant marigold in Appleton 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. Starting your marigold indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Appleton the average date of last frost happens on April 15. It might get as low as -20°F during the coldest months of winter.

It's important to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Appleton and it changes from year to year. Since half of the time in Appleton there is a last frost after April 15 be ready to protect your marigold in the event of a late frost.

USDA Zone Info for Appleton

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Appleton

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