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.

In Montgomery you can figure out when it's possible to plant bidens by referring to the USDA zone info.

Planting Calendar for Bidens

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

Since bidens are not cold tolerant it's important to wait until after the last frost before you can plant them.

The earliest that you can plant bidens in Montgomery 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 fully mature. If you are starting your bidens indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Montgomery. It might get as low as 10°F during the coldest months of winter.

Keep in mind that USDA zone info for Montgomery 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 Montgomery last frost occurs after March 15 so make sure that you are prepared to cover your bidens in the event of one of those late frosts.

USDA Zone Info for Montgomery

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 Montgomery

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