Cutleaf Watermilfoil Plant Care
Myriophyllum pinnatum (Walter) Britton, Sterns & Poggenb.
Updated · Sources · How we source care data
Myriophyllum pinnatum, common names cutleaf water-milfoil, green parrot's-feather, and pinnate water-milfoil, is a species of Myriophyllum.
Full sun to partial shade
At a glance
How do you care for Cutleaf Watermilfoil?
Cutleaf Watermilfoil grows best in full sun to partial shade.
What Is the Cutleaf Watermilfoil?
Cutleaf Watermilfoil (Myriophyllum pinnatum) belongs to the Haloragaceae family within the Myriophyllum genus. Cutleaf Watermilfoil is also known as Feathered Watermilfoil.
Cutleaf Watermilfoil displays a submerged aquatic plant growth habit, reaching up to tall with a spread of approximately . Cutleaf Watermilfoil produces small inconspicuous flowers above water.
What Light Does the Cutleaf Watermilfoil Need?
Cutleaf Watermilfoil thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Soil Mix Works Best for a Cutleaf Watermilfoil?
Rich, loamy soil with good moisture retention. Good drainage is essential for Cutleaf Watermilfoil to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Cutleaf Watermilfoil?
Repot annually in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Cutleaf Watermilfoil?
Cutleaf Watermilfoil can be propagated through stem cuttings, division, seeds. Similar propagation techniques also apply to alternate-flowered water-milfoil plant care, which shares the same genus.
Is the Cutleaf Watermilfoil Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Cutleaf Watermilfoil, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Cutleaf Watermilfoil?
Cutleaf Watermilfoil is susceptible to aphids, snails, algae. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
Keep exploring plants
Cutleaf Watermilfoil is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Myriophyllum genus — compare its care with other Myriophyllum species on PlantoScan.
Myriophyllum is part of the Haloragaceae plant family — browse all Haloragaceae genera and species.
Cutleaf Watermilfoil thrives in bright light and direct sun — see other bright-light plants.
More Myriophyllum Species
Other Myriophyllum species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Myriophyllum pinnatum (Walter) Britton, Sterns & Poggenb., family Haloragaceae (first published in Prelim. Cat. : 19 (1888)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Cutleaf Watermilfoil, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Cutleaf Watermilfoil Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species