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.

You can determine when it's the best time to plant morning glory in Columbia by checking out 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 when the weather gets warmer.

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

The earliest that you can plant morning glory in Columbia is April. However, you really should wait until May 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 August. If you wait any later than that and your morning glory may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your morning glory indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Columbia. You can expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Columbia is an average the actual date of last frost changes from year to year. Half of the time in Columbia it frosts late in the year after March 15 so make sure that you are ready to protect your morning glory if you have one of those late frosts.

USDA Zone Info for Columbia

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Columbia

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