Swamp Smartweed

Polygonum hydropiperoides, Polygonaceae

Zones

4–10

Layer

Herbaceous

Lifespan

Perennial

Growth

Fast

Guild Roles

Pollinator AttractorBeneficial Insect HabitatDynamic Accumulator

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

High (established)High (seedling)

Soil pH

5 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

False floating-heartNymphoides fallax

Pest DeterrentPollinator Sharing

Net-Veined BundleflowerDesmanthus reticulatus

Nitrogen FixationPest Deterrent

Crested Joint VetchAeschynomene cristata

Nitrogen FixationBeneficial Insect Habitat

Douglas' MeadowfoamLimnanthes douglasii

Pollinator SharingBeneficial Insect Habitat

Georgia BulrushScirpus georgianus

Pollinator SharingWind Protection

Antagonistic Plants

Bushy SeedboxLudwigia alternifolia

Smartweed contains allelopathic compounds that may inhibit Ludwigia growth, while both compete for wetland margin space

Big Bend BluebonnetLupinus havardii

False waterpepper allelopathic properties can suppress lupine establishment

Uses

Functions

Water FiltrationErosion ControlHabitat CreationNutrient CyclingSoil Remediation

Edible Parts

Young LeavesSeeds

Medicinal Uses

Anti-InflammatoryAstringentDigestive Aid

Common Questions

What zones does Swamp Smartweed grow in?

Swamp Smartweed grows in USDA hardiness zones 4 through 10.

What are good companion plants for Swamp Smartweed?

Good companions for Swamp Smartweed include False floating-heart, Net-Veined Bundleflower, Crested Joint Vetch, Douglas' Meadowfoam, Georgia Bulrush.

Design guilds with Swamp Smartweed and see companion relationships visually.

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