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PlantSnap
Plant Care
Joyweed
(Alternanthera sessilis)
Also Known As
Joyweed, Chinese watercress, Water amaranth, Masalchi keerai
About This Plant
Alternanthera sessilis is a herbaceous plant species that belongs to the family Amaranthaceae. It is commonly known as sessile joyweed or dwarf copperleaf. The plant is native to Asia, Africa and South America, and grows in a wide range of habitats including wetlands, rice paddies, and along riverbanks.
Plant Care Instructions
Outdoor Size Range
12-36 inches (30-90 cm)
Light Requirements
Alternanthera sessilis requires full sun to partial shade. It can tolerate some shade but colors will be less intense.
Humidity Needs
The plant prefers high humidity levels but can tolerate average indoor humidity.
Fertilizing Schedule
The plant requires regular fertilization with a balanced fertilizer during the growing season. Reduce fertilizer during the winter months.
Pruning Guidelines
Prune regularly to maintain the desired shape and size. Pinch back the tips to encourage bushy growth.
Common Pests and Diseases
Common pests include spider mites, mealybugs, and whiteflies. Diseases include root rot and leaf spot.
Indoor Size Range
12-24 inches (30-60 cm)
Watering Schedule
The plant prefers consistently moist soil. Water regularly, but do not overwater as it can lead to root rot.
Temperature Range
Alternanthera sessilis prefers warm temperatures between 60-80°F (15-27°C). It can tolerate temperatures as low as 50°F (10°C) and as high as 95°F (35°C).
Growing Season
The plant can be grown year-round in tropical climates. In temperate regions, it is best grown during the summer months.
Growing Difficulty Level
Alternanthera sessilis is relatively easy to grow and maintain.
USDA Hardiness Zones
Alternanthera sessilis is not frost-tolerant and is best grown in USDA hardiness zones 10-11.
Did You Know?
In traditional medicine, Alternanthera sessilis is used to treat a variety of ailments including fever, coughs, and diarrhea.
