One of the first steps you take when you are figuring out 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.

You should be able to figure out when it's possible to plant iberis by using the USDA zone info for Pittsburg.

Planting Calendar for Iberis

Frost tolerance for iberis:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since iberis are one of those plants that can tolerate a little bit of cold weather you can plant them a bit earlier in the year than more sensitive plants.

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

The last month that you can plant iberis and expect a good harvest is probably October. Any later than that and your iberis may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your iberis indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Pittsburg. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Pittsburg may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Pittsburg there is a last frost after February 15 be ready to cover your iberis in the event of a late frost.

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.