Reed Manna Grass (Glyceria Maxima) is a perennial grass in the Poaceae family with moderate care difficulty. It requires very high, aquatic watering and full sun or partial shade light in USDA hardiness zones 4-9. This plant is toxic to cats and dogs — keep it out of reach of pets.

Glyceria maxima is a tall, perennial, semi-aquatic grass native to northern Eurasia, known for its ability to form dense stands in wetlands and along water bodies.