Rattlebox
Ludwigia alternifolia
Last reviewed: August 2026
Ludwigia alternifolia, commonly called rattlebox, is a wetland forb with small yellow flowers blooming from June through August. It grows best in full sun along marsh edges, wet meadows and roadside ditches in humid, temperate climates.
Toxicity unknown
Rattlebox (Ludwigia alternifolia) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
medium
Size
12"–36" H × 6"–24" W
Bloom
Jun, Jul, Aug
Native to
AL, AR, CT, DE and 29 more states
Pollinators
bees, beetles
Before you buy
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Rattlebox is a native perennial wildflower that produces small yellow flowers throughout summer. It grows in an upright form with alternate leaves and thrives in sunny locations with moderate moisture.
Growing Rattlebox
Grow Rattlebox in full sun and medium water. Mature plants reach 12 to 36 inches tall and spread 6 to 24 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Rattlebox takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Common name 'Rattlebox' sounds undesirable
- Wildflower appearance may seem weedy to neighbors
- Dies back completely in winter leaving bare patches
Wildlife value
The summer blooms attract native bees and beetles for pollination. The plant provides habitat and food sources for various beneficial insects.
Common questions
- When does rattlebox bloom?
- Ludwigia alternifolia produces its small four petaled yellow flowers from June through August, with individual plants often continuing to flower over several weeks within that window.
- Why is Ludwigia alternifolia called rattlebox?
- The common name comes from its dry, box shaped seed capsules, which hold loose seeds that rattle when the stalks are shaken or moved by wind.
- What pollinators visit rattlebox flowers?
- Bees and beetles are the main visitors to the flowers of Ludwigia alternifolia, drawn to the open yellow blooms during the summer flowering period.
- What growing conditions does rattlebox need?
- This forb does best in full sun with consistently moist to wet soil, making it a good fit for pond margins, wet meadows, ditches and other low, damp sites.
- Is Rattlebox HOA-friendly?
- Rattlebox takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Rattlebox? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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