One of the best tools that you have as gardeners to help us estimate 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.

In Sierra Vista you can determine when it's the best time to plant morning glory by reviewing the USDA zone info.

Planting Calendar for Morning Glory

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

You should not plant morning glory until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant morning glory in Sierra Vista 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. Any later than that and your morning glory may not have a chance to fully mature. Starting your morning glory indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Sierra Vista. You can expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Sierra Vista is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Sierra Vista last frost occurs after March 15 be ready to protect your morning glory in the event of a surprise late frost.

USDA Zone Info for Sierra Vista

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Sierra Vista

You may be interested in your other planting guides for Sierra Vista.