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

You can determine when it's a good idea to plant ageratum in Salamanca by using the USDA zone info.

Planting Calendar for Ageratum

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

Since ageratum require warm weather it is necessary to wait until after the last frost before you can plant them.

The earliest that you can plant ageratum in Salamanca 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. Any later than that and your ageratum may not have a chance to really do well. You can get started a little bit earlier by starting your ageratum indoors.

Last Frost Date

The average date of last frost is April 15 in Salamanca. You can expect an average low temperature of -20°F in the coldest months of winter.

It's important to remember that USDA zone info for Salamanca is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Salamanca you get a frost after April 15 so always be ready to cover your ageratum if you have one of those late frosts.

USDA Zone Info for Salamanca

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°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 -15°F.

Plants to Grow in Salamanca

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