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.

You can determine when it's the best time to plant bell peppers in Cupertino by using the USDA zone info.

Planting Calendar for Bell Peppers

Frost tolerance for bell peppers:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Bell Peppers are not cold tolerant which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant bell peppers in Cupertino 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 bell peppers and expect a good harvest is probably September. If you wait any later than that and your bell peppers may not have a chance to grow to maturity. If you are starting your bell peppers indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost is on February 15 in Cupertino. You can expect an average low temperature of 25°F in the coldest months of winter.

It's important to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Cupertino and it changes from year to year. Half of the time in Cupertino it frosts late in the year after February 15 so always be ready to cover your bell peppers if you have a late frost.

USDA Zone Info for Cupertino

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 Cupertino

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