One of the first steps you take when you are making a decision about 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 possible to figure out when to plant pumpkins by looking at the USDA zone info for Renton.

Planting Calendar for Pumpkins

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

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

The earliest that you can plant pumpkins in Renton 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 fully mature. Starting your pumpkins indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Renton. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Renton is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Renton you get a frost after March 15 be ready to cover your pumpkins in the event of one of those late frosts.

USDA Zone Info for Renton

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Renton

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