Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Oskaloosa you can estimate when it's a good idea to plant caladium by checking out the USDA zone info.

Planting Calendar for Caladium

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

It's not a good idea to plant caladium until after the last frost has passed because they require warm weather.

The earliest that you can plant caladium in Oskaloosa 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 caladium and expect a good harvest is probably August. Any later than that and your caladium may not have a chance to really do well. Starting your caladium indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Oskaloosa. It might get as low as -15°F during the coldest months of winter.

Keep in mind that USDA zone info for Oskaloosa is an average and the actual date of last frost changes from year to year. Since half of the time in Oskaloosa it frosts late in the year after April 15 be ready to protect your caladium in the event of a surprise late frost.

USDA Zone Info for Oskaloosa

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 Oskaloosa

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