The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By reviewing the USDA zone info for Eugene it's a good idea to estimate when you can plant portulaca.

Planting Calendar for Portulaca

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

You should not plant portulaca until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant portulaca in Eugene 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 portulaca and expect a good harvest is probably August. You probably don't want to wait any later than that or else your portulaca may not have a chance to grow to maturity. If you are starting your portulaca indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Eugene. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Eugene is just an average the actual date of last frost is different every year. Half of the time in Eugene it frosts late in the year after March 15 so be sure to be ready to cover your portulaca if you have one of those late frosts.

USDA Zone Info for Eugene

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Eugene

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