Powdery Alligator-flag (Thalia Dealbata) is a perennial aquatic in the Marantaceae family with moderate care difficulty. It requires very high watering and full sun or partial shade light in USDA hardiness zones 7-10. This plant is safe for cats and dogs.

Thalia dealbata is a hardy aquatic perennial known for its large, blue-green leaves and striking purple flower spikes in mid-summer.

Powdery Alligator-flag

Powdery Alligator-flag

Thalia Dealbata

Thalia dealbata is a hardy aquatic perennial known for its large, blue-green leaves and striking purple flower spikes in mid-summer.

Quick Facts

Type
aquatic
Lifecycle
perennial
Care Difficulty
Moderate
Water Needs
very high
Light
Full Sun, Partial Shade
Hardiness Zones
7-10

Safety

🐕
Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:clay, sandy, loamy, mucky
Indoor:No
Outdoor:Yes
Garden Use:ornamental, water filtration, wildlife habitat

Care Calendar

Monthly care tasks for Powdery Alligator-flag

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Powdery Alligator-flag
Powdery Alligator-flag detail

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Taxonomy

Family:Marantaceae
Genus:Thalia