Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when you can plant pumpkins by referring to the USDA zone info for Hillsdale.

Planting Calendar for Pumpkins

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

You should not plant pumpkins until after the last frost because they are not cold tolerant.

The earliest that you can plant pumpkins in Hillsdale 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 pumpkins and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pumpkins may not have a chance to grow to maturity. Starting your pumpkins indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Hillsdale may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Hillsdale you get a frost after April 15 so always be ready to protect your pumpkins in the event of a surprise late frost.

USDA Zone Info for Hillsdale

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Hillsdale

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