Plant Care Hardy Canna

Hardy Canna

Also known as

Powdery Alligator-Flag, Powdery Alligator-Flag, Hardy canna and Powdery thalia


Thalia dealbata

How to care for Hardy Canna


How often to water your Hardy Canna

Water needs for Hardy Canna
0.5 cups
every 9

Hardy Canna needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Powdery Alligator-Flag in your home

Light needs and placement for plant Hardy Canna: 1ft from a window
1ft or less from
a window

Hardy Canna love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Hardy Canna does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Hardy Canna in your home 🏡.


How to fertilize Hardy Canna

Nutrient, fertilizer, and repotting needs for Hardy Canna: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Hardy Canna after it doubles in size or once a year—whichever comes first.

Difficulty Level

Hardy Canna is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Hardy Canna

Hardy Canna

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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