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

You can estimate when you can plant bidens in Oberlin by looking at the USDA zone info.

Planting Calendar for Bidens

Frost tolerance for bidens:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Bidens require warm weather which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant bidens in Oberlin 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. You probably don't want to wait any later than that or else your bidens may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bidens indoors.

Last Frost Date

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

Remember that USDA zone info for Oberlin is not always accurate and the actual date of last frost is different every year. Since half of the time in Oberlin you get a frost after April 15 be ready to protect your bidens in the event of a surprise late frost.

USDA Zone Info for Oberlin

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 Oberlin

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