One of the first steps you take when you are making a decision about your gardening schedule is find your 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 checking out the USDA zone info for Crystal City it's possible to determine when you can plant morning glory.

Planting Calendar for Morning Glory

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

Morning Glory require warm weather which tells us that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant morning glory in Crystal City 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. 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 few weeks earlier.

Last Frost Date

In Crystal City the average date of last frost happens on February 15. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Crystal City is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Crystal City last frost occurs after February 15 so always be ready to cover your morning glory if you have one of those late frosts.

USDA Zone Info for Crystal City

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 Crystal City

You may be interested in your other planting guides for Crystal City.