The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By looking at the USDA zone info for Elk River you should be able to determine when you can plant caladium.

Planting Calendar for Caladium

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

You can not plant caladium until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant caladium in Elk River 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 caladium and expect a good harvest is probably August. You probably don't want to wait any later than that or else your caladium may not have a chance to grow to maturity. You can get started a little bit earlier by starting your caladium indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Elk River. You can expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that USDA zone info for Elk River is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Elk River it frosts late in the year after May 15 be ready to cover your caladium in the event of a late frost.

USDA Zone Info for Elk River

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 Elk River

You may be interested in your other planting guides for Elk River.