Panicle Hydrangea vs Anise Hyssop - TreeTime.ca

Panicle Hydrangea vs Anise Hyssop

Agastache foeniculum

Hydrangea paniculata

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Anise Hyssop
Panicle Hydrangea

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.

Panicle Hydrangea is a large, broad-leaf, deciduous shrub that is prized for its ornamental appeal. It is easy to care for, long-lived, and cold-hardy.

Depending on the variety, its flowers change color throughout the blooming period. Make sure you water Panicle Hydrangeas regularly to achieve the most notable color change.

Anise Hyssop Quick Facts

Panicle Hydrangea Quick Facts

Zone: 3b
Zone: 3a
Height: 0.9 m (3 ft)
Height: 6 m (20 ft)
Spread: 0.6 m (2.0 ft)
Spread: 3 m (10 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: dry, normal
Moisture: normal
Growth rate: fast
Growth rate: fast
Life span: short
Life span: short
Growth form: upright, clump-forming
Spreading: seeds - high, rhizomes - medium
Suckering: medium
Maintenance: medium


Foliage: aromatic when crushed
Flowers: spikes of purple flowers
Flowers: white, strong scent, very showy
Bloom time: summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: blue giant hyssop, giant hyssop, lavender hyssop
Other Names: white panicle hydrangea