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Yellow Flag Iris

Iris pseudacorus, Iridaceae

Zones
4–9
Layer
Aquatic
Lifespan
Perennial
Growth
Fast

Guild Roles

Pollinator AttractorDynamic Accumulator

Growing Conditions

Sun

Partial Sun (acceptable)Full Sun (optimal)

Water

HighHigh

Soil pH

5 – 8

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Water Forget-Me-NotMyosotis scorpioides
Pollinator Sharing
Sweet FlagAcorus calamus
Pollinator SharingBeneficial Insect Habitat
Water CeleryOenanthe javanica
Pollinator SharingBeneficial Insect Habitat

Antagonistic Plants

Water HyacinthEichhornia crassipes

Water hyacinth can shade yellow flag iris and may release growth-inhibiting compounds

Uses

Functions

Water Filtration

Common Questions

What zones does Yellow Flag Iris grow in?

Yellow Flag Iris grows in USDA hardiness zones 4 through 9.

What are good companion plants for Yellow Flag Iris?

Good companions for Yellow Flag Iris include Water Forget-Me-Not, Sweet Flag, Water Celery.

Design guilds with Yellow Flag Iris and see companion relationships visually.

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