One of the first steps you take when you are getting a good idea 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.

By looking at the USDA zone info for Revere it's a good idea to determine when it's a good idea to plant four o' clock.

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.

You should not plant four o' clock until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant four o' clock in Revere 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 really do well. If you are starting your four o' clock indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Revere. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Revere is just an average the actual date of last frost will vary from year to year. Since half of the time in Revere it frosts late in the year after April 15 be ready to cover your four o' clock in the event of one of those late frosts.

USDA Zone Info for Revere

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 Revere

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