Golden Lights Rhododendron (Azalea) vs Sulphur-Flower Buckwheat - TreeTime.ca

Golden Lights Rhododendron (Azalea) vs Sulphur-Flower Buckwheat

Rhododendron x Golden Lights

Eriogonum umbellatum

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Golden Lights Rhododendron (Azalea)
Sulphur-Flower Buckwheat

Golden Lights Rhododendron is an exceptionally cold hardy, deciduous azalea. Part of the Northern Lights Series, this shrub was cultivated specifically to withstand harsh winters, making it ideal for our prairie climate.

In late spring you'll be drawn to its beautiful, golden, sweetly fragrant flowers. Pruning is recommended after the flowers are spent to control the size and shape of this shrub.

Consider Golden Lights Rhododendron when planning your next hedge, or plant it on its own as a striking specimen plant.

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.

Golden Lights Rhododendron (Azalea) Quick Facts

Sulphur-Flower Buckwheat Quick Facts

Zone: 4a
Zone: 3a
Height: 1.2 m (4 ft)
Height: 0.2 m (0.5 ft)
Spread: 0.9 m (3 ft)
Spread: 0.5 m (1.5 ft)
Light: partial shade, full sun
Light: partial shade, full sun
Moisture: normal, wet
Moisture: dry, normal
Growth rate: medium
Growth rate: medium
Life span: medium
Life span: short
Growth form: upright to spreading, clump-forming
Spreading: seeds - low
Suckering: low
Maintenance: medium

Toxicity: All parts of a rhododendron bush, including the leaves, stems and blooms, are toxic to cats, dogs, and horses.

Foliage: leathery
Fall colour: Bronze to red
Fall colour: reddish bronze
Flowers: large, yellow/gold
Flowers: colour varies, typically white to yellow
Bloom time: mid spring to mid summer
Hybrid: no
Hybrid: no
Catkins: no
Catkins: no


Native to: AB, BC
Other Names: sulphur buckwheat, sulphur flower, wild buckwheat