One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

By checking out the USDA zone info for Morro Bay it's a good idea to determine when it's the best time to plant oxalis.

Planting Calendar for Oxalis

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

You should not plant oxalis until after the last frost because they are not cold tolerant.

The earliest that you can plant oxalis in Morro Bay 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 oxalis and expect a good harvest is probably September. You probably don't want to wait any later than that or else your oxalis may not have a chance to fully mature. You can get started a few weeks earlier by starting your oxalis indoors.

Last Frost Date

On average the last frost is on February 15 in Morro Bay. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Morro Bay is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Morro Bay you get a frost after February 15 be ready to cover your oxalis if you have one of those late frosts.

USDA Zone Info for Morro Bay

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Morro Bay

You may be interested in your other planting guides for Morro Bay.