White Fringe Tree vs Anise Hyssop - TreeTime.ca

White Fringe Tree vs Anise Hyssop

Chionanthus virginicus

Agastache foeniculum

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White Fringe Tree
Anise Hyssop

White Fringe Tree is known for its fringe-like white flowers. It can either grow as a small tree or a large multistemmed shrub. The White Fringe Tree has separate male and female plants. Both male and female flowers have white fringe-like petals, but the male flowers are longer and showier. The female flowers give way to clusters of dark blue to black berries. These berries are not edible for humans but attract birds and other wildlife.

The White Fringe Tree is tolerant of clay soils, saline soils, and air pollution but does not do well in prolonged dry conditions.

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.

As a perennial, it dies back to the crown each winter, it will regrow from the base in the spring. Avoid disturbing the crown during late winter to ensure healthy growth the following season.

White Fringe Tree Quick Facts

Anise Hyssop Quick Facts

Zone: 3a
Zone: 3b
Height: 5 m (15 ft)
Height: 0.9 m (3 ft)
Spread: 5 m (15 ft)
Spread: 0.6 m (2.0 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: slow
Growth rate: fast
Life span: medium
Life span: short
Growth form: upright, clump-forming
Spreading: seeds - high, rhizomes - medium
Suckering: medium
Maintenance: medium


Foliage: aromatic when crushed
Flowers: fragrant, white clusters
Flowers: spikes of purple flowers
Bloom time: summer to fall
Berries: blue to black
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: american fringe tree, american fringetree, fringe tree, fringetree, north american fringe tree, white fringetree
Other Names: blue giant hyssop, giant hyssop, lavender hyssop