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 estimate when it's a good idea to plant pole beans in Waterloo by checking out the USDA zone info.

Planting Calendar for Pole beans

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

Since pole beans are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant pole beans in Waterloo 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 pole beans and expect a good harvest is probably August. If you wait any later than that and your pole beans may not have a chance to grow to maturity. If you are starting your pole beans indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Waterloo. It might get as low as -10°F during the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Waterloo and it can change quite a bit from year to year. Half of the time in Waterloo you get surprised by a frost after April 15 so make sure that you are ready to cover your pole beans if you have one of those late frosts.

USDA Zone Info for Waterloo

Here is the info for USDA Zone 6a.

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

Plants to Grow in Waterloo

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