One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can determine when it's the best time to plant pumpkins in Green River by using the USDA zone info.

Planting Calendar for Pumpkins

Frost tolerance for pumpkins:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since pumpkins are not cold tolerant it's important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant pumpkins in Green River is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant pumpkins and expect a good harvest is probably August. Any later than that and your pumpkins may not have a chance to really do well. If you are starting your pumpkins indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Green River. You can expect an average low temperature of -25°F in the coldest months of winter.

Remember that USDA zone info for Green River may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Green River it frosts late in the year after May 15 so always be ready to protect your pumpkins in the event of a late frost.

USDA Zone Info for Green River

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Green River

You may be interested in your other planting guides for Green River.