How to Grow Pickerel Frog-bit
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Pickerel Frog-bit
Pontederia cordata
aquatic plantPickerel frog-bit is an emergent aquatic plant native to North America, featuring heart-shaped leaves on long petioles and delicate purple-blue flowers. It thrives in shallow water environments such as ponds, marshes, and wetlands. This ornamental aquatic plant is popular for water gardens and provides excellent habitat for aquatic wildlife.
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Example Pickerel Frog-bit timeline · Pittsburgh, PA (Zone 6b)
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Plant Pickerel Frog-bit
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Pickerel Frog-bit
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Pickerel Frog-bit dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-9; deciduous in colder regions, evergreen in warmer zones
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Get my Pickerel Frog-bit timeline →Growth Stages
Establishment
2-4 weeksNew plants develop root systems and leaf bases adapt to aquatic environment
Plant in spring after last frost. Ensure stable water depth and temperature. Protect from excessive water movement or disturbance.
Vegetative Growth
4-8 weeksHeart-shaped leaves emerge on long petioles, forming dense rosettes above water surface
Remove any decaying leaves. Apply aquatic fertilizer monthly. Monitor for overcrowding and thin if necessary to maintain water flow.
Flowering
8-12 weeksDelicate purple to lavender-blue flowers appear on spikes above foliage, typically mid-summer to early fall
Deadhead spent flower spikes to encourage continued blooming. Ensure adequate sunlight for prolific flowering. Maintain consistent fertilization.
Senescence (in cold climates)
4-8 weeksFoliage yellows and dies back as water temperatures cool in autumn; plants become dormant
Remove dead foliage to prevent decomposition buildup. Ensure water depth of 18+ inches in zones 3-6 to protect roots from freezing. In warmer zones, cut back dead growth and plants remain evergreen.
Dormancy/Winter
12-16 weeks (zones 3-6); minimal dormancy (zones 7-9)In cold zones, plants are completely dormant with roots protected underwater; in warm zones, minimal growth continues
No feeding or pruning needed. Check water level monthly. In zone 3-5, ensure minimum water depth of 24 inches. Spring growth resumes as water warms.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove affected leaves; introduce natural predators like dragonfly nymphs; in severe cases, use water-safe insecticidal soap
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Generally harmless; maintain good water circulation and oxygenation; remove excess organic debris
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Hand-remove if excessive; maintain balanced ecosystem with natural predators; consider adding fish like koi or goldfish
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and
Ensure good water circulation and aeration; remove decaying plant material promptly; avoid overcrowding
Uses
Aquatic Habitat
WildlifeProvides dense leaf cover and shelter for fish fry, aquatic invertebrates, and breeding habitat for dragonflies and amphibians. The flower nectar attracts pollinators including bees and butterflies. [source]
Water Garden Ornament
HouseholdA classic emergent water garden plant prized for its attractive heart-shaped foliage and showy purple-blue flower spikes. Adds vertical interest and lush foliage to pond and water feature designs. [source]
Cut Flower Arrangements
CraftThe flower spikes can be cut for short-lived fresh water arrangements, though they last only a few days. The distinctive blooms add ornamental interest to floral displays. [source]
Traditional Herbal Use
MedicinalIn traditional Native American and folk medicine, pickerel rush was used for treating various ailments, though modern scientific evidence is limited. Used historically in herbal remedies. [source]
Pollinator Support
WildlifeThe purple-blue flower spikes are attractive to native bees, butterflies, and other pollinators, supporting biodiversity in water gardens and wetland restoration projects. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Pickerel frog-bit is ornamental and not harvested for food. Cut flowers can be enjoyed in water arrangements. For propagation, divide established plants in spring by separating rooted crowns. Seeds can be collected when flower pods mature and dry in late fall (zones 6-9), but are difficult to germinate and division is preferred.
Fun Facts
- 🌱 Pickerel frog-bit is named 'pickerel' after the pickerel fish that inhabits similar freshwater environments, not after the plant itself—the name refers to the fish-rich waters where the plant naturally grows.
- 🌱 The heart-shaped leaves can reach 4-8 inches long and are held high above water on inflated petioles that act as floats, allowing the plant to thrive in shallow water.
- 🌱 In colder climates, pickerel frog-bit is one of the hardiest aquatic plants, capable of surviving winters with roots submerged in frozen water, making it ideal for northern water gardens where tropical aquatics cannot survive.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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