Sulphur lupine (Lupinus sulphureus)
Care, watering, light and tips for Sulphur lupine on Floravia.
Quick facts
- Family: Fabaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Full sun
- Temperature: 5–35 °C
- Toxicity: Toxic to pets
About Sulphur lupine
Lupinus sulphureus, commonly known as Sulphur Lupine, is a perennial herbaceous plant belonging to the Fabaceae family, native to North America. It stands out for its bright yellow flower spikes that can reach heights of up to a meter, adding a vertical burst of color to garden borders, naturalized meadows, or as part of a low-maintenance landscape. Its palmate green foliage complements the blooms, creating visual appeal from late spring to early summer.
Native range
Western North America
Care tips
This lupine thrives in full sun exposure and well-drained, slightly acidic to neutral soil, avoiding heavy, clayey soils that can lead to root rot. Watering should be regular during establishment, but once mature, it is quite drought-tolerant; overwatering is a common mistake. To encourage a second flush of blooms and maintain plant vigor, it is advisable to deadhead spent flowers.
How to save a dying Sulphur lupine
- Warning signs
- Yellowing or wilting leaves, soft or drooping stems, no flowering.
- First aid
- Move to partial shade, check drainage, water if dry, aerate if wet.
- What kills it
- Overwatering or heavy soil causing root rot.
- Can it be saved?
- Yes, if roots aren't completely rotted; act fast.