Yellow Hedysarum vs Anise Hyssop - TreeTime.ca

Yellow Hedysarum vs Anise Hyssop

Hedysarum sulphurescens

Agastache foeniculum

CUSTOM GROW

NOT AVAILABLE THIS SEASON - MIGHT RETURN

Yellow Hedysarum
Anise Hyssop

Yellow Hedysarum is a native perennial wildflower recognised for its clusters of bright yellow pea-like blooms. It adds colour to grasslands, roadsides, and open woods. It is also a nitrogen fixer, which helps improve soil fertility. Because of its deep root system, it contributes to slope and soil stabilisation.

The plant provides forage for wildlife and cover for small animals, especially its roots. Its flowers attract pollinators such as bees.

Yellow Hedysarum plays an important role in prairie and foothill ecosystems. It is well-suited for ecological restoration, naturalisation, pollinator gardens, and erosion control projects.

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.

Yellow Hedysarum Quick Facts

Anise Hyssop Quick Facts

Zone: 2b
Zone: 3b
Height: 0.5 m (1.5 ft)
Height: 0.9 m (3 ft)
Spread: 0.2 m (0.8 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: ascending to upright
Growth form: upright, clump-forming
Spreading: seeds - low
Spreading: seeds - high, rhizomes - medium
Maintenance: medium


Foliage: aromatic when crushed
Flowers: creamy yellow, in dense spikes
Flowers: spikes of purple flowers
Bloom time: late spring to summer
Bloom time: summer to fall
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: AB, SK, MB, ON, NT
Other Names: sulphur hedysarum, sulphur sweet-vetch, yellow sweet-vetch
Other Names: blue giant hyssop, giant hyssop, lavender hyssop