Yarrow vs Anise Hyssop - TreeTime.ca

Yarrow vs Anise Hyssop

Achillea borealis (Previously Achillea millefolium)

Agastache foeniculum

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Yarrow
Anise Hyssop

Yarrow is a herbaceous, native wildflower that is found across Canada. It features large, flat clusters of tiny white flowers. The blooms attract a variety of pollinators, making it an ideal choice for pollinator gardens. While partial shade is tolerated, the best flowering occurs in full sun. Yarrow is resistant to deer and rabbits, making it both a beautiful and practical addition to your landscape.

The entire plant is edible, but leaves and flowers are most commonly consumed. They have a strong licorice scent and a mild sweet flavor that is similar to tarragon. Yarrow leaves can also be used as a natural insect repellent.

It is important to plant Yarrow in the right place, it can spread quickly via both rhizomes and self-seeding. Deadheading the spent flowers will extend the bloom season and can help limit self-seeding.

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.

Yarrow Quick Facts

Anise Hyssop Quick Facts

Zone: 3a
Zone: 3b
Height: 0.3 m (1.0 ft)
Height: 0.9 m (3 ft)
Spread: 0.9 m (3 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: short
Life span: short
Growth form: upright, clump-forming
Spreading: seeds - high, rhizomes - medium
Suckering: none
Maintenance: medium

Toxicity: toxic to dogs, cats, and horses

Foliage: aromatic when crushed
Flowers: clusters of white flowers
Flowers: spikes of purple flowers
Bloom time: late spring to early summer
Bloom time: summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Other Names: common yarrow, devils nettle, milfoil, western yarrow, white yarrow
Other Names: blue giant hyssop, giant hyssop, lavender hyssop