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

The best time to plant four-o-clock flower in Oakmont can be figured out by using the USDA zone info.

Planting Calendar for Four-o-clock flower

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

Since four-o-clock flower require warm weather you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant four-o-clock flower in Oakmont 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

The average date of last frost is April 15 in Oakmont. You should expect an average low temperature of -5°F in the coldest months of winter.

It's important to remember that USDA zone info for Oakmont is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Oakmont there is a last frost after April 15 be ready to protect your four-o-clock flower in the event of a surprise late frost.

USDA Zone Info for Oakmont

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 Oakmont

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