Tall Manna Grass vs Sweetgrass - TreeTime.ca

Tall Manna Grass vs Sweetgrass

Anthoxanthum hirtum/Anthoxanthum nitens (Hierochloe odorata))

Glyceria grandis

CUSTOM GROW

CUSTOM GROW

Sweetgrass
Tall Manna Grass

Sweetgrass is a cool-season perennial grass best known for its sweet, vanilla-like fragrance. The scent comes from coumarin in the leaves, which is pleasant to humans but has a bitter taste that makes the plant less appealing to deer and other herbivores. As a cool-season grass, Sweetgrass grows most vigorously in spring and fall, slowing or even going dormant during the heat of summer.

It spreads quickly through creeping rhizomes and can be difficult to remove once established, so it is best planted in areas where its spread will not cause problems. Due to its deep, vigorous root system and preference for moist soils, Sweetgrass is especially useful for erosion control, soil stabilization, riparian plantings, and naturalization projects.

Note: Sweetgrass was formerly classified under the scientific name Hierochloe odorata and its subspecies. The subspecies found in Canada are currently considered two distinct species: Anthoxanthum hirtum, which is native across Canada, and Anthoxanthum nitens, which is native to Eastern Canada. Because these two species are alike and share many overlapping common names, they are often considered as only one species.

Manna Grass and other waterside plants are an excellent way to prevent erosion and provide habitat and forage for animals. The difference is that Manna Grass looks better doing it! With distinctive purple grains at the top of its stalks, Manna Grass adds a splash of color to the waterside that most other aquatics can't offer.

Manna Grass is good for returning disturbed sites to nature and provides nourishment to many animals, except for cattle who find it toxic.

Sweetgrass Quick Facts

Tall Manna Grass Quick Facts

Zone: 1a
Zone: 1a
Height: 0.5 m (1.5 ft)
Height: 1.2 m (4 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: full sun
Moisture: normal, wet
Moisture: wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: arching to upright, colony-forming
Spreading: rhizomes - high, seeds - low
Suckering: medium

Toxicity: toxic if large amounts ingested

Toxicity: toxic to cattle
Foliage: fragrant, bright green
Foliage: long thin leaves
Flowers: purple
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, PE
Other Names: bison grass, buffalo grass, holy grass, sweet grass, vanilla sweetgrass
Other Names: american manna grass, reed manna grass