The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to estimate when it's possible to plant bidens by using the USDA zone info for Struthers.

Planting Calendar for Bidens

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

It's a bad idea to plant bidens until after all chance of frost has passed because they are not cold tolerant.

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

Last Frost Date

In Struthers the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Struthers may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Struthers it frosts late in the year after April 15 so make sure that you are ready to protect your bidens in the event of a late frost.

USDA Zone Info for Struthers

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 Struthers

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