Giant Arrowhead

Sagittaria montevidensis, Alismataceae

Zones

7–11

Layer

Herbaceous

Lifespan

Perennial

Growth

Fast

Guild Roles

ProducerBeneficial Insect HabitatPollinator Attractor

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

High (established)High (seedling)

Soil pH

6 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Crested Joint VetchAeschynomene cristata

Nitrogen Fixation

American JointvetchAeschynomene americana

Nitrogen Fixation

Orange SnowflakeNymphoides hydrophylla

Shade ProvisionBeneficial Insect Habitat

Uruguay Sword PlantEchinodorus uruguayensis

Wind ProtectionBeneficial Insect Habitat

Antagonistic Plants

Yellow VelvetleafLimnocharis flava

Both are large emergent plants with extensive root systems that compete for nutrients and growing space

Three-leaf ArrowheadSagittaria trifolia

Related arrowhead species compete for similar emergent wetland niches and resources

Uses

Functions

Water FiltrationErosion ControlHabitatConstructed WetlandTuber Production

Edible Parts

TubersYoung Leaves

Common Questions

What zones does Giant Arrowhead grow in?

Giant Arrowhead grows in USDA hardiness zones 7 through 11.

What are good companion plants for Giant Arrowhead?

Good companions for Giant Arrowhead include Crested Joint Vetch, American Jointvetch, Orange Snowflake, Uruguay Sword Plant.

Design guilds with Giant Arrowhead and see companion relationships visually.

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