Family. Leaf blades are flat with a prominent midrib and rough margins. What does it look like? Members can view this photo in high resolution. Glyceria grandis: leaves with blades mostly 4.5-12 mm wide and smooth sheaths, and upper glumes 1.5-2.7 mm long (vs. G. maxima, with leaves with blades mostly 8-18 mm wide and minutely scabrous sheaths and upper glumes mostly 3-4 mm long). Europe. Agrecol Native Nursery, 10101 North Casey Road, Evansville, WI 53536. ... range from yellow to green in colour, with a purplish tinge. Glyceria maxima. Browse pictures and read growth / cultivation information about Manna Grass, Reed Sweetgrass (Glyceria maxima) supplied by member gardeners in the PlantFiles database at Dave's Garden. Flowering occurs in spring and summer. Manna Grass, an excellent pond plant is great when planted in moist soils near ponds, streams, wetlands, marshes and bog areas. Where is it originally from? Leaves are bright green, 30-60cm long by 0.7-2cm wide, held on stout, unbranched, erect stems. Reed Sweet Grass – Glyceria maxima: What to look for Reed Sweet Grass or Glyceria maxima– is a robust, perennial grass that grows 90-250cm in height. Flowers appear in spring in Reed sweet-grass (Glyceria maxima) is regarded as a significant environmental weed in Victoria, Tasmania, New South Wales and Western Australia. Members can view this photo in high resolution. Aerenchyma (spongy tissue whose air spaces facilitate atmospheric gaseous exchange and increase Habitat: Glyceria maxima is a wetland obligate species (plant that has occurred in wetland habitat 99% of the time it was sampled), which typically grows in rivers, streams, dams, and ponds. Glyceria maxima. Glyceria maxima reduces plant species diversity, in particular, seed producing plants that provide food for wildlife. Poaceae (grass) Also known as. Telephone: 608.223.3571 Fax: 608.884.4640 Email: ecosolutions@agrecol.com Tall Mannagrass Glyceria maxima. Similar taxa. Tall Mannagrass is a rapidly establishing native species suitable for restoration of swamps, the edges of marshes, ponds, and streams, and other wetland plant communities where … The Plants Database includes the following 18 species of Glyceria . Plant Description Manna Grass or Glyceria-maxima, is an ornamental grass with flat, medium-green leaf blades and attractive panicles. Green foliage grows to 3 feet tall in full sun to part shade, forming erect tufts. Join our friendly community that shares tips and ideas for gardens, along with seeds and plants. Reed Sweet Grass is a tall perennial grass that provides superb cover for wildfowl and other wildlife. In 2006, it was listed as a priority environmental weed in at least one Natural Resource Management region. Small dark brown seeds are produced prolifically throughout summer and autumn. 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