One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Laurel can be reffered to in order to estimate when to plant bidens.

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 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 Laurel 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. Starting your bidens indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Laurel. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Laurel is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Laurel last frost occurs after March 15 be ready to protect your bidens in the event of a late frost.

USDA Zone Info for Laurel

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 Laurel

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