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.

You can estimate when it's the best time to plant morning glory in Grass Valley by reviewing the USDA zone info.

Planting Calendar for Morning Glory

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

You really shouldn't plant morning glory until after all chance of frost has passed because they require warm weather.

The earliest that you can plant morning glory in Grass Valley 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. If you wait any later than that and your morning glory may not have a chance to fully mature. You can get started a few weeks earlier by starting your morning glory indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Grass Valley. You should expect an average low temperature of 20°F in the coldest months of winter.

Keep in mind that USDA zone info for Grass Valley is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Grass Valley you get a frost after February 15 be ready to protect your morning glory in the event of a late frost.

USDA Zone Info for Grass Valley

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Grass Valley

You may be interested in your other planting guides for Grass Valley.