Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Fort Lupton you can estimate when to plant canna by checking out the USDA zone info.

Planting Calendar for Canna

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

It's probably not a good 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 Fort Lupton 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 fully mature. If you are starting your canna indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Fort Lupton. You should expect an average low temperature of -15°F in the coldest months of winter.

It's important to remember that USDA zone info for Fort Lupton is an average and the actual date of last frost is different every year. Half of the time in Fort Lupton you get surprised by a frost after April 15 so just be sure to be ready to cover your canna in the event of a surprise late frost.

USDA Zone Info for Fort Lupton

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 Fort Lupton

You may be interested in your other planting guides for Fort Lupton.