One of the best tools that you have as gardeners to help us estimate 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.

It's possible to estimate when it's a good idea to plant four o' clock by reviewing the USDA zone info for Lewisburg.

Planting Calendar for Four O' Clock

Frost tolerance for four o' clock:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Four O' Clock are not cold tolerant which tells us that it is necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant four o' clock in Lewisburg 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 four o' clock and expect a good harvest is probably August. If you wait any later than that and your four o' clock may not have a chance to fully mature. You can get started a little bit earlier by starting your four o' clock indoors.

Last Frost Date

On average the last frost is on April 15 in Lewisburg. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Lewisburg 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 Lewisburg last frost occurs after April 15 so be sure to be ready to cover your four o' clock if you have a surprise late frost.

USDA Zone Info for Lewisburg

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Lewisburg

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