When can I plant Canna in Zone 1a

One of the best tools that we have as gardeners to help us figure out our gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A way of making a decision about when it's the best time to plant canna is to check out the USDA zone info for Zone 1a.


Planting Calendar for Canna

Frost tolerance for canna: Not tolerant of frost.
When you should plant them: After all chance of frost has passed.

Canna do not do well in cold weather which means that it is necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant canna
Possibly ok, but a risky time to plant canna
Probably not a good time to plant canna

The earliest that you can plant canna in Zone 1a is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant canna and expect a good harvest is probably July. You probably don't want to wait any later than that or else your canna may not have a chance to really do well. Starting your canna 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 June 15 in Zone 1a. We can expect an average low temperature of -60°F in the coldest months of winter.

Keep in mind that USDA zone info for Zone 1a is an average and our actual date of last frost will vary from year to year. Since half of the time in Zone 1a we get a frost after June 15 be ready to protect your canna in the event of a surprise late frost.

USDA Zone Info for Zone 1a

Here is the info for USDA Zone 1a.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-60°F
Highest Expected Low-55°F

This means that on a really cold year, the coldest it will get is -60°F. On most years you should be prepared to experience lows near -55°F.

Plants to Grow in Zone 1a

You may be interested in our other planting guides for Zone 1a.