The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Colby should be used to estimate when it's possible to plant lantana.

Planting Calendar for Lantana

Frost tolerance for lantana:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You really shouldn't plant lantana until after the last frost because they require warm weather.

The earliest that you can plant lantana in Colby 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 lantana and expect a good harvest is probably August. Any later than that and your lantana may not have a chance to fully mature. Starting your lantana indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Colby. In the coldest months of winter you should expect an average low temperature of -15°F.

Since the USDA zone info for Colby may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Colby it frosts late in the year after April 15 so be sure to be ready to cover your lantana if you have one of those late frosts.

USDA Zone Info for Colby

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°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 -10°F.

Plants to Grow in Colby

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