Marsh Dewflower
Murdannia keisak
Last reviewed: August 2026
Toxicity unknown
Marsh Dewflower (Murdannia keisak) 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
part sun
Water
high
Size
4"–12" H × 2"–6" W
Bloom
Jul, Aug, Sep
Pollinators
bees, flies
Native alternatives to Marsh Dewflower
Marsh Dewflower is not native to the United States. These natives fill a similar role in a planting, matched on bloom season, bloom color and mature size.
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaMarsh dewflower is a low-growing annual wildflower that thrives in wet areas and partial sun. It produces small flowers from summer through early fall and spreads modestly in suitable conditions.
In an HOA neighborhood
Marsh Dewflower takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Has weedy appearance and growth habit
- Annual nature means gaps in coverage
- Requires consistently wet conditions
Wildlife value
This plant attracts bees and flies during its summer to fall blooming period, providing nectar for these pollinators.
Common questions
- How much sun does Marsh Dewflower need?
- Marsh Dewflower grows best in part sun conditions.
- When does Marsh Dewflower bloom?
- Marsh Dewflower blooms in July, August, and September.
- What pollinators does Marsh Dewflower attract?
- Marsh Dewflower draws bees and flies.
- Is Marsh Dewflower HOA-friendly?
- Marsh Dewflower takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
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 Marsh Dewflower? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz