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.

By looking at the USDA zone info for Covina you should be able to estimate when it's possible 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.

Morning Glory do not do well in cold weather which means that you have to wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant morning glory in Covina is February. However, you really should wait until March 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. You probably don't want to wait any later than that or else your morning glory may not have a chance to really do well. If you are starting your morning glory indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Covina. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Covina is an average the actual date of last frost will vary from year to year. Half of the time in Covina you get a frost after January 31 so make sure that you are prepared to cover your morning glory if you have one of those late frosts.

USDA Zone Info for Covina

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Covina

You may be interested in your other planting guides for Covina.