One of the first steps you take when you are figuring out your gardening schedule is find your 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.

It's a good idea to figure out when it's possible to plant pumpkins by looking at the USDA zone info for Lewiston.

Planting Calendar for Pumpkins

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

It's probably a bad idea to plant pumpkins until after the last frost because they require warm weather.

The earliest that you can plant pumpkins in Lewiston 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. If you wait any later than that and your pumpkins may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your pumpkins indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Lewiston. It might get as low as 5°F during the coldest months of winter.

Always keep in mind that USDA zone info for Lewiston may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Lewiston you get a frost after April 15 be ready to cover your pumpkins if you have a surprise late frost.

USDA Zone Info for Lewiston

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Lewiston

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