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

It's a good idea to figure out when it's possible to plant lisianthus by using the USDA zone info for Cupertino.

Planting Calendar for Lisianthus

Frost tolerance for lisianthus:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Since lisianthus are not cold tolerant it's necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant lisianthus 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 lisianthus and expect a good harvest is probably September. Any later than that and your lisianthus may not have a chance to fully mature. You can get started a little bit earlier by starting your lisianthus indoors.

Last Frost Date

On average all chance of frost has passed is on February 15 in Cupertino. In the coldest months of winter you can expect an average low temperature of 25°F.

Since the USDA zone info for Cupertino may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Cupertino last frost occurs after February 15 so just be sure to be ready to cover your lisianthus 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.