One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

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

Planting Calendar for Poppies

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

Since poppies do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant poppies 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 poppies and expect a good harvest is probably October. If you wait any later than that and your poppies may not have a chance to fully mature. Starting your poppies indoors is a great way to get them started a little bit earlier.

Last Frost Date

In San Jose the average date of last frost happens on February 15. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for San Jose is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in San Jose you get a frost after February 15 be ready to protect your poppies 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.