Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when to plant four-o-clock flower is to refer to the USDA zone info for Bernalillo.

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 are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant four-o-clock flower in Bernalillo 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. Any later than that and your four-o-clock flower may not have a chance to really do well. Starting your four-o-clock flower indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Since the USDA zone info for Bernalillo is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Bernalillo you get surprised by a frost after April 15 be ready to cover your four-o-clock flower if you have a surprise late frost.

USDA Zone Info for Bernalillo

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 Low	5°F
Highest Expected Low	10°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 Bernalillo

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