Sulphur-Flower Buckwheat vs Twinflower - TreeTime.ca

Sulphur-Flower Buckwheat vs Twinflower

Eriogonum umbellatum

Linnaea borealis

CUSTOM GROW

CUSTOM GROW

Sulphur-Flower Buckwheat
Twinflower

Sulphur-Flower Buckwheat is a native perennial wildflower known for its dense clusters of cream to yellow flowers. The long-lasting blooms persist from late spring into summer, providing an extended nectar source for a variety of pollinators. The flower buds are often red-tinted before opening. As the blooms age, they shift to orange or red, adding seasonal interest and making them well-suited to dried flower arrangements. Its seeds are also eaten by birds, adding to its ecological value.

Depending on climate and conditions, Sulphur-Flower Buckwheat may be evergreen to semi-evergreen, or its foliage may turn red during fall. Its deep roots and spreading growth stabilize rocky or sandy soils, making it useful for erosion control. Exceptionally hardy once established, it requires little care and thrives in challenging environments, making it an excellent choice for pollinator gardens, naturalization, and ecological restoration projects.

Twinflower is a native, trailing evergreen ground cover known for its delicate flowers that grow in nodding pairs. These pale pink blooms are described as being sweetly fragrant, attracting native bees and other pollinators.
Growing in cool, moist, acidic soils, the trailing stems form roots as they spread and start to form mats across the forest floor. Due to its woody stem, it is technically classified as a shrub and often referred to as a subshrub or dwarf shrub. This species is well-suited for naturalization, restoration, and conservation projects.
Twinflower (Linneae borealis) was named in honour of Carl Linnaeus, who adopted it as his personal emblem.

Sulphur-Flower Buckwheat Quick Facts

Twinflower Quick Facts

Zone: 3a
Zone: 2a
Height: 0.2 m (0.5 ft)
Height: 0.1 m (0.4 ft)
Spread: 0.5 m (1.5 ft)
Spread: 0.9 m (3 ft)
Light: partial shade, full sun
Light: any
Moisture: dry, normal
Moisture: normal, wet
Growth rate: medium
Growth rate: slow
Life span: short
Life span: short
Growth form: upright to spreading, clump-forming
Growth form: creeping or trailing, ground cover
Spreading: seeds - low
Spreading: stolons - medium, seeds - low


Foliage: leathery
Fall colour: reddish bronze
Fall colour: reddish tinge
Flowers: colour varies, typically white to yellow
Flowers: Pink, bell-shaped, fragrant pairs
Bloom time: mid spring to mid summer
Bloom time: summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Native to: AB, BC, SK, MB, ON, QC, NS, NB, NL, YT, NT, NU, PE
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat
Other Names: northern twinflower, pink bells