Smooth Sumac vs Anise Hyssop - TreeTime.ca

Smooth Sumac vs Anise Hyssop

Rhus glabra

Agastache foeniculum

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(new stock expected: fall of 2026)

Smooth Sumac
Anise Hyssop

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.

Anise Hyssop is a native perennial wildflower known for its fragrant spikes of small purple flowers. This plant is an excellent source of nectar and is highly attractive to a variety of bees and other pollinators. Deadheading spent flowers will encourage more blooms throughout the season.

Its aromatic leaves release an anise-like (licorice) scent when crushed. Both the leaves and seeds are edible and have been used in teas and as flavouring. Leaves can be harvested at any time, though the oil content is highest just past full bloom. Deer tend to avoid Anise Hyssop because of its strong-smelling leaves. This makes it a useful plant for positioning as a protective border around more vulnerable species.

Anise Hyssop spreads by seeds and rhizomes, but is less aggressive than other members of the mint family and is easy to remove if needed. Historically, it was planted in large numbers as a honey plant to support apiaries. Birds also feed on its seeds, adding to its ecological value.

Smooth Sumac Quick Facts

Anise Hyssop Quick Facts

Zone: 3a
Zone: 3b
Height: 2.4 m (8 ft)
Height: 0.9 m (3 ft)
Spread: 2.1 m (7 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: dry, normal
Growth rate: fast
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, clump-forming
Spreading: seeds - high, rhizomes - medium
Suckering: high
Maintenance: medium
Maintenance: medium


Foliage: long, thin
Foliage: aromatic when crushed
Fall colour: scarlet red
Flowers: spikes of purple flowers
Bloom time: summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: BC, SK, MB, ON
Native to: AB, SK, MB, ON, NT
Other Names: blue giant hyssop, giant hyssop, lavender hyssop