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

The USDA zone info for San Jose can be looked at to determine when to plant morning glory.

Planting Calendar for Morning Glory

Frost tolerance for morning glory:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's probably a bad idea to plant morning glory until after the last frost has passed because they require warm weather.

The earliest that you can plant morning glory 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 morning glory and expect a good harvest is probably September. Any later than that and your morning glory may not have a chance to grow to maturity. Starting your morning glory indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

It's important to remember that USDA zone info for San Jose is an average and the actual date of last frost changes from year to year. Since half of the time in San Jose you get a frost after February 15 be ready to cover your morning glory if you have a 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.