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 USDA zone info for Crestline should be reffered to in order to determine when it's possible to plant trailing portulaca.

Planting Calendar for Trailing Portulaca

Frost tolerance for trailing portulaca:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since trailing portulaca require warm weather it's necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant trailing portulaca in Crestline 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 trailing portulaca and expect a good harvest is probably August. If you wait any later than that and your trailing portulaca may not have a chance to fully mature. You can get started a few weeks earlier by starting your trailing portulaca indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Crestline. It might get as low as -10°F during the coldest months of winter.

Keep in mind that USDA zone info for Crestline is an average and the actual date of last frost changes from year to year. Half of the time in Crestline it frosts late in the year after April 15 so make sure that you are prepared to cover your trailing portulaca if you have a late frost.

USDA Zone Info for Crestline

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Crestline

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