Smooth Sumac vs Sweetgrass - TreeTime.ca

Smooth Sumac vs Sweetgrass

Rhus glabra

Anthoxanthum nitens (Hierochloe odorata)

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CUSTOM GROW

Smooth Sumac
Sweetgrass

Smooth Sumac is an excellent shrub for both its ornamental appeal and tolerance of difficult planting sites. You'll love the attractive pyramidal spikes of hairy, red berries that emerge on female plants and the fern-like foliage that covers both male and female varieties.

Ensure you give Smooth Sumac enough space to spread out due to its high suckering nature. While not ideal for small, urban yards, this shrub will make a stunning border along a woodland edge or roadside.

Note:These plants typically reach maturity and make their sex easily known (females producing fruit) in their 3rd or 4th year of growth. Our seedlings are too young to identify their sex.

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.

Smooth Sumac Quick Facts

Sweetgrass Quick Facts

Zone: 3a
Zone: 1a
Height: 2.4 m (8 ft)
Height: 0.5 m (1.5 ft)
Spread: 2.1 m (7 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal, wet
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Growth form: arching to upright, colony-forming
Spreading: rhizomes - high, seeds - low
Suckering: high
Maintenance: medium


Toxicity: toxic if large amounts ingested
Foliage: long, thin
Foliage: fragrant, bright green
Fall colour: scarlet red
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


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