Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of getting a good idea when it's a good idea to plant chrysocephalum is to use the USDA zone info for San Jose.

Planting Calendar for Chrysocephalum

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

Since chrysocephalum are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant chrysocephalum in San Jose 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 chrysocephalum and expect a good harvest is probably September. Any later than that and your chrysocephalum may not have a chance to really do well. You can get started a little bit earlier by starting your chrysocephalum indoors.

Last Frost Date

The average date of last frost is February 15 in San Jose. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for San Jose may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in San Jose last frost occurs after February 15 be ready to protect your chrysocephalum if you have a surprise late frost.

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.