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.

A common way of determining when you can plant trailing portulaca is to check out the USDA zone info for Aberdeen.

Planting Calendar for Trailing Portulaca

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

It's probably a bad idea to plant trailing portulaca until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant trailing portulaca in Aberdeen is March. However, you really should wait until April 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 September. You probably don't want to wait any later than that or else your trailing portulaca may not have a chance to fully mature. 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

In Aberdeen the average date of last frost happens on February 15. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Aberdeen is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Aberdeen it frosts late in the year after February 15 so make sure that you are prepared to protect your trailing portulaca in the event of one of those late frosts.

USDA Zone Info for Aberdeen

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Aberdeen

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