When to Plant Watermelon in Canonsburg, PA

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can determine when it's the best time to plant watermelon in Canonsburg by looking at the USDA zone info.


Planting Calendar for Watermelon

Frost tolerance for watermelon: Not tolerant of frost.
When to plant: After the last frost has passed.

Watermelon require warm weather which means that you really should wait until it warms up after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant watermelon
Possibly ok, but a risky time to plant watermelon
Probably not a good time to plant watermelon

The earliest that you can plant watermelon in Canonsburg 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 watermelon and expect a good harvest is probably August. If you wait any later than that and your watermelon may not have a chance to really do well. You can get started a little bit earlier by starting your watermelon indoors.

Last Frost Date

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

Since the USDA zone info for Canonsburg is not always accurate the actual date of last frost is different every year. Half of the time in Canonsburg you get surprised by a frost after April 15 so make sure that you are ready to cover your watermelon in the event of a surprise late frost.

USDA Zone Info for Canonsburg

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 Canonsburg

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