Parrot feather
Myriophyllum aquaticum · Haloragaceae
The gardener's calendar
Ideal time to plant parrot feather: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Scientific name
- Myriophyllum aquaticum
- Family
- Haloragaceae
- Origin
- South America (Brazil, Argentina)
- Type
- Submerged and emergent aquatic plant
- Foliage
- Persistent, finely divided into pinnules
- Growth
- Very fast
- Hardiness
- Frost-sensitive, prefers temperate to warm waters
- Ideal depth
- 20 to 60 cm
Care
Light and exposure
Brazilian watermilfoil thrives in bright, indirect light. Position it in an area receiving at least 6 to 8 hours of light daily for optimal growth. In an aquarium, an LED lamp suited for aquatic plants is recommended.
Submersion and water quality
This aquatic plant must remain completely submerged or partially emergent depending on its variety. Maintain clear, well-oxygenated water with a pH between 6.5 and 7.5. Perform regular water changes (25% per week) to prevent nutrient accumulation.
Substrate and anchoring
Plant the watermilfoil in a nutrient-rich substrate made of fine sand or aquarium gravel, optionally enriched with nutrients. The stems root easily; ensure the base is well anchored to prevent floating. Using a plant clip or weight may be necessary initially.
Nutrition and minerals
Apply liquid fertilizers for aquatic plants containing macronutrients (N, P, K) and micronutrients (iron, boron, manganese) once or twice weekly. Dosage depends on the bioactive load of your pond or aquarium.
Pruning and growth control
Trim stems regularly to encourage a bushy form and control very rapid growth. Pinch the tips to stimulate branching. Remove yellowed or damaged portions to maintain good aesthetics and optimal health.
Prevention and maintenance
Brazilian watermilfoil is generally robust, but watch for filamentous algae that may invade it. A balance between light and nutrients along with regular cleaning minimizes this risk. Check for burnt or discolored leaves, signs of mineral deficiency.
Did you know?
Brazilian watermilfoil is a remarkable amphibious plant capable of growing both underwater and in emergent conditions, even changing the appearance of its leaves depending on the environment. Due to its extremely rapid growth and invasive potential in natural ecosystems, it is classified as an invasive species in some countries and forbidden for outdoor cultivation in humid temperate zones.
Where to buy it
Best planted in spring or autumn, away from frost and heatwaves. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September, October.
Add this plant to my garden →Plants from the same family
- Spiked water milfoilMyriophyllum spicatum
- Myriophyllum alterniflorumMyriophyllum alterniflorum
- Gonocarpus tetragynusGonocarpus tetragynus
- Siberian water milfoilMyriophyllum sibiricum
- Gonocarpus teucrioidesGonocarpus teucrioides
- Gonocarpus micranthusGonocarpus micranthus
Tips generated and checked by Viridia — adapt them to your local climate.