Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to estimate when to plant trailing portulaca by looking at the USDA zone info for Twin Falls.

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 do not do well in cold weather it is important 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 Twin Falls 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. Any later than that and your trailing portulaca may not have a chance to grow to maturity. If you are starting your trailing portulaca indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Twin Falls. In the coldest months of winter you should expect an average low temperature of -5°F.

Keep in mind that USDA zone info for Twin Falls is an average and the actual date of last frost changes from year to year. Half of the time in Twin Falls there is a last frost after April 15 so make sure that you are ready to cover your trailing portulaca in the event of a late frost.

USDA Zone Info for Twin Falls

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 Twin Falls

You may be interested in your other planting guides for Twin Falls.