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.

The first opportunity to plant canna in Rathdrum can be figured out by looking at the USDA zone info.

Planting Calendar for Canna

Frost tolerance for canna:	Not tolerant of frost.
When to plant:	After the last frost.

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

The earliest that you can plant canna in Rathdrum 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 canna and expect a good harvest is probably August. If you wait any later than that and your canna may not have a chance to fully mature. You can get started a little bit earlier by starting your canna indoors.

Last Frost Date

On average the last frost is on April 15 in Rathdrum. It might get as low as -5°F during the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Rathdrum and it changes from year to year. Half of the time in Rathdrum you get a frost after April 15 so always be ready to cover your canna if you have one of those late frosts.

USDA Zone Info for Rathdrum

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Rathdrum

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