One of the best tools that you have as gardeners to help us estimate 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.

It's possible to determine when it's a good idea to plant string beans by looking at the USDA zone info for Bellingham.

Planting Calendar for String beans

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

String beans are not cold tolerant which means that you must wait until it warms up after the last frost before you can plant them.

The earliest that you can plant string beans in Bellingham 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 string beans and expect a good harvest is probably August. If you wait any later than that and your string beans may not have a chance to fully mature. You can get started a few weeks earlier by starting your string beans indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Bellingham. In the coldest months of winter you can expect an average low temperature of 10°F.

Always keep in mind that USDA zone info for Bellingham may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Bellingham last frost occurs after March 15 be ready to cover your string beans in the event of one of those late frosts.

USDA Zone Info for Bellingham

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

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

Plants to Grow in Bellingham

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