The USDA Zone info is a great tool for gardeners to help us determine 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.

The USDA zone info for Windsor can be read to figure out when it's a good idea to plant euphorbia.

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 do ok in very little cold which tells us that you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant euphorbia in Windsor 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. If you wait any later than that and your euphorbia may not have a chance to really do well. Starting your euphorbia indoors is a great way to get them started a little bit earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Windsor may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Windsor it frosts late in the year after February 15 be ready to protect your euphorbia in the event of a late frost.

USDA Zone Info for Windsor

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 Windsor

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