When to Plant Bidens in Stone Park, IL

One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant bidens in Stone Park should be figured out by reviewing 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 tells us that it is necessary to wait until it warms up after all chance of frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant bidens
Possibly ok, but a risky time to plant bidens
Probably not a good time to plant bidens

The earliest that you can plant bidens in Stone Park 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. Any later than that and your bidens may not have a chance to really do well. You can get started a couple of weeks earlier by starting your bidens indoors.

Last Frost Date

In Stone Park the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Stone Park and it can change quite a bit from year to year. Half of the time in Stone Park it frosts late in the year after April 15 so be sure to be ready to cover your bidens in the event of one of those late frosts.

USDA Zone Info for Stone Park

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 Stone Park

You may be interested in your other planting guides for Stone Park.