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American Water-Willow

Justicia americana, Acanthaceae

Zones
4–9
Layer
Aquatic
Lifespan
Perennial
Growth
Fast

Guild Roles

Beneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)

Water

High

Soil pH

6 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Allegheny MonkeyflowerMimulus ringens
Pollinator Sharing
Swamp LoosestrifeDecodon verticillatus
Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Water HyacinthEichhornia crassipes

Water hyacinth can shade American water-willow and may release growth-inhibiting compounds

Uses

Functions

Water FiltrationWildlife Habitat

Common Questions

What zones does American Water-Willow grow in?

American Water-Willow grows in USDA hardiness zones 4 through 9.

What are good companion plants for American Water-Willow?

Good companions for American Water-Willow include Allegheny Monkeyflower, Swamp Loosestrife.

Design guilds with American Water-Willow and see companion relationships visually.

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