One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant decorative kale in San Jose should be figured out by referring to the USDA zone info.

Planting Calendar for Decorative Kale

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

Decorative Kale are moderately cold tolerant which tells us that you can plant them earlier than other frost tender plants.

The earliest that you can plant decorative kale in San Jose 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 decorative kale and expect a good harvest is probably October. If you wait any later than that and your decorative kale may not have a chance to grow to maturity. If you are starting your decorative kale indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in San Jose. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for San Jose is an average the actual date of last frost will vary from year to year. Half of the time in San Jose you get a frost after February 15 so make sure that you are ready to cover your decorative kale in the event of one of those late frosts.

USDA Zone Info for San Jose

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 San Jose

You may be interested in your other planting guides for San Jose.