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.

In Kelso you can figure out when it's possible to plant lantana by reviewing the USDA zone info.

Planting Calendar for Lantana

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

It's a bad idea to plant lantana until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant lantana in Kelso 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 couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Kelso. In the coldest months of winter you should expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Kelso is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Kelso you get surprised by a frost after March 15 be ready to cover your lantana in the event of one of those late frosts.

USDA Zone Info for Kelso

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 Kelso

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