One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first chance to plant canna in Storm Lake can be figured out by referring to the USDA zone info.

Planting Calendar for Canna

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

Since canna are not cold tolerant it's necessary to wait until after the last frost before you can plant them.

The earliest that you can plant canna in Storm Lake 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. Any later than that and your canna may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your canna indoors.

Last Frost Date

The average date of last frost is April 15 in Storm Lake. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Storm Lake is not always accurate and the actual date of last frost is different every year. Half of the time in Storm Lake last frost occurs after April 15 so just be sure to be ready to protect your canna in the event of a late frost.

USDA Zone Info for Storm Lake

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Storm Lake

You may be interested in your other planting guides for Storm Lake.