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.

The earliest that you can plant morning glory in Roma can be estimated by using 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.

Since morning glory do not do well in cold weather it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant morning glory in Roma 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. If you are starting your morning glory indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Roma. You can expect an average low temperature of 25°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Roma and it will vary from year to year. Half of the time in Roma there is a last frost after February 15 so make sure that you are prepared to cover your morning glory in the event of one of those late frosts.

USDA Zone Info for Roma

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 Roma

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