Pickerelweed

Aquatic

Pickerelweed

Pontederia cordata

Also known as: Pickerel Rush

Aquatic Pontederiaceae EdibleWildlife AttractorWater PurifierOrnamental
Hardiness Zone
3-11
Ideal Temp
60–95°F
Survives Down To
10°F
Life Cycle
Perennial

Pickerelweed is the classic emergent pond plant with glossy leaves and spikes of blue-purple flowers that look designed for dragonflies. Young leaf stalks and seeds have food use histories; positive ID and clean water matter — do not forage next to stormwater outflows named after chemicals. In subtropical and tropical Americas it spreads politely in shallow margins and helps clarify water by catching silt. ☀️💧 Sun and Water: - Full sun for best bloom; tolerates light shade with fewer flowers. - Roots in submerged soil 6-18 inches of water typical; stabilizes pond edges. ✂️ Propagation: - Divide rhizomes in spring. - Seeds germinate in warm wet conditions. Great in a frog hotel; terrible in a dry rock garden unless you enjoy brown archaeology.

Good Neighbors
  • Cattail
  • Duck Potato
  • Lotus
Cautions
  • Droughty berms with no liner or water source
Known Threats — Organic Solutions Only
Aphids
Aphidoidea
Snails
Gastropoda