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.

The first opportunity to plant trailing portulaca in Spring Valley can be estimated by looking at the USDA zone info.

Planting Calendar for Trailing Portulaca

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

It's probably a bad idea to plant trailing portulaca until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant trailing portulaca in Spring Valley 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. You probably don't want to wait any later than that or else your trailing portulaca may not have a chance to fully mature. You can get started a little bit earlier by starting your trailing portulaca indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Spring Valley. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Spring Valley is just an average the actual date of last frost is different every year. Half of the time in Spring Valley you get surprised by a frost after April 15 so make sure that you are prepared to cover your trailing portulaca if you have a surprise late frost.

USDA Zone Info for Spring Valley

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Spring Valley

You may be interested in your other planting guides for Spring Valley.