When to Plant Four-o-clock flower in Brookhaven, PA

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to estimate when it's the best time to plant four-o-clock flower by checking out the USDA zone info for Brookhaven.


Planting Calendar for Four-o-clock flower

Frost tolerance for four-o-clock flower: Not tolerant of frost.
When to plant: After the last frost.

Since four-o-clock flower require warm weather it is necessary to wait until after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant four-o-clock flower
Possibly ok, but a risky time to plant four-o-clock flower
Probably not a good time to plant four-o-clock flower

The earliest that you can plant four-o-clock flower in Brookhaven 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 flower and expect a good harvest is probably August. If you wait any later than that and your four-o-clock flower may not have a chance to really do well. You can get started a few weeks earlier by starting your four-o-clock flower indoors.

Last Frost Date

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

Since the USDA zone info for Brookhaven may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Brookhaven last frost occurs after April 15 so be sure to be ready to cover your four-o-clock flower in the event of a surprise late frost.

USDA Zone Info for Brookhaven

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low5°F
Highest Expected Low10°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 10°F.

Plants to Grow in Brookhaven

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