The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. 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 sweet peas in Renton by using the USDA zone info.

Planting Calendar for Sweet Peas

Frost tolerance for sweet peas:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sweet Peas tend to make it in some cold which means that you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant sweet peas in Renton is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant sweet peas and expect a good harvest is probably August. Any later than that and your sweet peas may not have a chance to fully mature. You can get started a little bit earlier by starting your sweet peas indoors.

Last Frost Date

On average the last frost has passed is on 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 is different every year. Half of the time in Renton it frosts late in the year after March 15 so be sure to be ready to cover your sweet peas if you have a late frost.

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.