Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to determine when it's a good idea to plant bidens by looking at the USDA zone info for Nappanee.

Planting Calendar for Bidens

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

Since bidens require warm weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant bidens in Nappanee 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 fully mature. You can get started a little bit earlier by starting your bidens indoors.

Last Frost Date

The average date of last frost is April 15 in Nappanee. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Nappanee is an average and the actual date of last frost will vary from year to year. Half of the time in Nappanee it frosts late in the year after April 15 so make sure that you are prepared to cover your bidens in the event of a late frost.

USDA Zone Info for Nappanee

Here is the info for USDA Zone 5b.

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

Plants to Grow in Nappanee

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