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.

A common way of determining when it's a good idea to plant caladium is to check out the USDA zone info for Colusa.

Planting Calendar for Caladium

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

Since caladium are not cold tolerant you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant caladium in Colusa is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant caladium and expect a good harvest is probably September. Any later than that and your caladium may not have a chance to fully mature. Starting your caladium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Colusa. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Colusa is just an average and the actual date of last frost is different every year. Half of the time in Colusa you get surprised by a frost after February 15 so make sure that you are ready to cover your caladium if you have a surprise late frost.

USDA Zone Info for Colusa

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°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 30°F.

Plants to Grow in Colusa

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