One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. 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 purslane in Oregon can be figured out by referring to the USDA zone info.

Planting Calendar for Purslane

Frost tolerance for purslane:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Purslane can survive in mild cold which means that you can plant them just a tiny bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant purslane in Oregon 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 purslane and expect a good harvest is probably August. Any later than that and your purslane may not have a chance to fully mature. Starting your purslane indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Oregon. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Oregon is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Oregon it frosts late in the year after April 15 be ready to cover your purslane in the event of one of those late frosts.

USDA Zone Info for Oregon

Here is the info for USDA Zone 5a.

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

Plants to Grow in Oregon

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