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.

One way of getting a good idea when it's the best time to plant coleus is to consult the USDA zone info for Laramie.

Planting Calendar for Coleus

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

It's not a good idea to plant coleus until after all chance of frost has passed because they require warm weather.

The earliest that you can plant coleus in Laramie is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant coleus and expect a good harvest is probably August. If you wait any later than that and your coleus may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your coleus indoors.

Last Frost Date

In Laramie the average date of last frost happens on May 15. In the coldest months of winter you can expect an average low temperature of -25°F.

Since the USDA zone info for Laramie is an average the actual date of last frost will vary from year to year. Half of the time in Laramie it frosts late in the year after May 15 so make sure that you are ready to cover your coleus if you have a surprise late frost.

USDA Zone Info for Laramie

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Laramie

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