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

A way of determining when to plant ageratum is to look at the USDA zone info for Moab.

Planting Calendar for Ageratum

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

You should not plant ageratum until after the last frost because they require warm weather.

The earliest that you can plant ageratum in Moab 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 ageratum and expect a good harvest is probably August. If you wait any later than that and your ageratum may not have a chance to really do well. You can get started a couple of weeks earlier by starting your ageratum indoors.

Last Frost Date

On average the last frost is on April 15 in Moab. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Moab is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Moab last frost occurs after April 15 be ready to protect your ageratum if you have a late frost.

USDA Zone Info for Moab

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Moab

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