One of the first steps you take when you are figuring out your gardening schedule is find your 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.

In Newburgh you can figure out when to plant four o' clock by reviewing the USDA zone info.

Planting Calendar for Four O' Clock

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

Since four o' clock are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant four o' clock in Newburgh 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. Any later than that and your four o' clock may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your four o' clock indoors.

Last Frost Date

The average date of last frost is April 15 in Newburgh. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Newburgh may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Newburgh you get surprised by a frost after April 15 be ready to cover your four o' clock in the event of one of those late frosts.

USDA Zone Info for Newburgh

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Newburgh

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