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.

By reviewing the USDA zone info for Palmer it's possible to figure out 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 the last frost has passed.

Since trailing portulaca 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 trailing portulaca in Palmer is May. However, you really should wait until June 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. You probably don't want to wait any later than that or else your trailing portulaca may not have a chance to really do well. You can get started a little bit earlier by starting your trailing portulaca indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Palmer. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Palmer is just an average the actual date of last frost changes from year to year. Half of the time in Palmer you get a frost after May 15 so just be sure to be ready to protect your trailing portulaca in the event of a late frost.

USDA Zone Info for Palmer

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Palmer

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