One of the first steps you take when you are determining 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.

The first opportunity to plant calibrachoa in Pittsburg should be figured out by checking out the USDA zone info.

Planting Calendar for Calibrachoa

Frost tolerance for calibrachoa:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Calibrachoa tend to make it in very little cold which tells us that you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant calibrachoa in Pittsburg is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant calibrachoa and expect a good harvest is probably September. If you wait any later than that and your calibrachoa may not have a chance to really do well. You can get started a couple of weeks earlier by starting your calibrachoa indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Pittsburg. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Pittsburg is an average the actual date of last frost changes from year to year. Since half of the time in Pittsburg you get surprised by a frost after February 15 be ready to protect your calibrachoa in the event of one of those late frosts.

USDA Zone Info for Pittsburg

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Pittsburg

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