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 Cupertino can be read to estimate when it's the best time to plant pincushion flower.

Planting Calendar for Pincushion Flower

Frost tolerance for pincushion flower:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Pincushion Flower tend to make it in some cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant pincushion flower in Cupertino is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant pincushion flower and expect a good harvest is probably October. If you wait any later than that and your pincushion flower may not have a chance to really do well. You can get started a couple of weeks earlier by starting your pincushion flower indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Cupertino. It might get as low as 25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Cupertino is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Cupertino you get a frost after February 15 be ready to cover your pincushion flower in the event of 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.