One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

A way of figuring out when to plant bidens is to look at the USDA zone info for Andalusia.

Planting Calendar for Bidens

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

Since bidens require warm weather it's important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant bidens in Andalusia 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. You can get started a couple of weeks earlier by starting your bidens indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Andalusia. In the coldest months of winter you can expect an average low temperature of 10°F.

It's important to remember that USDA zone info for Andalusia is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Andalusia you get surprised by a frost after March 15 so be sure to be ready to cover your bidens in the event of one of those late frosts.

USDA Zone Info for Andalusia

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Andalusia

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