Green Alder vs Tall Manna Grass - TreeTime.ca

Green Alder vs Tall Manna Grass

Alnus alnobetula subsp. crispa

Glyceria grandis

COMING SOON

(new stock expected: fall of 2025)

CUSTOM GROW

Green Alder
Tall Manna Grass

Green Alder is a cold hardy, native shrub. It is often planted on infertile sites so it can fix nitrogen from the air and improve the soil quality.

Green Alder is known for its smooth grey bark and attractive shiny green leaves; it is commonly used in reclamation.

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.

Green Alder Quick Facts

Tall Manna Grass Quick Facts

Zone: 1a
Zone: 1a
Height: 7 m (23 ft)
Height: 1.2 m (4 ft)
Spread: 3 m (10 ft)
Spread: 0.6 m (2.0 ft)
Light: any
Light: full sun
Moisture: any
Moisture: wet
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Suckering: high
Suckering: medium


Toxicity: toxic to cattle
Foliage: long thin leaves
Flowers: purple
Hybrid: no
Hybrid: no
Catkins: yes
Catkins: no

In row spacing: 0.9 m (3 ft)

Between row spacing: 5 m (16 ft)
Other Names: american green alder
Other Names: american manna grass, reed manna grass