One of the best tools that you have as gardeners to help us determine 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 common way of estimating when it's a good idea to plant melons is to look at the USDA zone info for Keokuk.

Planting Calendar for Melons

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

It's not a good idea to plant melons until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant melons in Keokuk 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 melons and expect a good harvest is probably August. If you wait any later than that and your melons may not have a chance to grow to maturity. If you are starting your melons indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Keokuk. You should expect an average low temperature of -10°F in the coldest months of winter.

Keep in mind that USDA zone info for Keokuk is not always accurate and the actual date of last frost changes from year to year. Half of the time in Keokuk you get a frost after April 15 so make sure that you are prepared to cover your melons in the event of a late frost.

USDA Zone Info for Keokuk

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 Keokuk

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