One of the best tools that you have as gardeners to help us determine 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.

One way of making a decision about when you can plant purslane is to examine the USDA zone info for Upland.

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 some cold which tells us that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant purslane in Upland is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant purslane and expect a good harvest is probably September. Any later than that and your purslane may not have a chance to fully mature. You can get started a few weeks earlier by starting your purslane indoors.

Last Frost Date

In Upland the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Upland is not always accurate the actual date of last frost is different every year. Half of the time in Upland there is a last frost after January 31 so be sure to be ready to protect your purslane if you have one of those late frosts.

USDA Zone Info for Upland

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Upland

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