Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when to plant bidens is to check out the USDA zone info for Sparta.

Planting Calendar for Bidens

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

It's not a good idea to plant bidens until after all chance of frost has passed because they require warm weather.

The earliest that you can plant bidens in Sparta 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 grow to maturity. Starting your bidens indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Sparta. You should expect an average low temperature of 0°F in the coldest months of winter.

Keep in mind that USDA zone info for Sparta is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Sparta there is a last frost after April 15 so always be ready to protect your bidens if you have a surprise late frost.

USDA Zone Info for Sparta

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Sparta

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