Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's a good idea to plant euphorbia is to check out the USDA zone info for Red Bluff.

Planting Calendar for Euphorbia

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

Euphorbia are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can start planting them slightly earlier than other plants that might not handle the cold.

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

Last Frost Date

The average date of last frost is February 15 in Red Bluff. In the coldest months of winter you should expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Red Bluff is not always accurate and the actual date of last frost is different every year. Half of the time in Red Bluff you get a frost after February 15 so make sure that you are ready to protect your euphorbia if you have a surprise late frost.

USDA Zone Info for Red Bluff

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 Red Bluff

You may be interested in your other planting guides for Red Bluff.