Lanceleaf Goldenbanner Plant Care
Thermopsis lanceolata R.Br.
Updated · Sources · How we source care data
With its lance-shaped, bright yellow flowers contrasting against its dark green foliage, this plant originates from North America. Plant collectors are drawn to Thermopsis lanceolata for its unique appearance and ability to attract pollinators such as bees and butterflies.
Every 7–14 days
Full sun to partial shade
60–80°F
40–60%
At a glance
How do you care for Lanceleaf Goldenbanner?
Water Lanceleaf Goldenbanner every 7–14 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 60–80°F (16–27°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Lanceleaf Goldenbanner Native To?
What Is the Lanceleaf Goldenbanner?
Lanceleaf Goldenbanner (Thermopsis lanceolata) belongs to the Fabaceae family within the Thermopsis genus. Lanceleaf Goldenbanner is native to Russia (Siberia), Kazakhstan, Mongolia, Nepal and China. Lanceleaf Goldenbanner is also known as Golden Pea.
Lanceleaf Goldenbanner displays an upright, bushy perennial growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Lanceleaf Goldenbanner produces showy clusters of yellow, pea-like flowers.
Leaf size: approximately 6 inches.
How Often Should You Water a Lanceleaf Goldenbanner?
Thermopsis lanceolata requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Lanceleaf Goldenbanner Need?
Lanceleaf Goldenbanner thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Lanceleaf Goldenbanner Prefer?
Thermopsis lanceolata grows best at temperatures of 60–80°F. Lanceleaf Goldenbanner prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Lanceleaf Goldenbanner?
Well-draining sandy loam with added organic matter for nutrients. Good drainage is essential for Lanceleaf Goldenbanner to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Lanceleaf Goldenbanner?
Feed Lanceleaf Goldenbanner every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Lanceleaf Goldenbanner?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Lanceleaf Goldenbanner?
Lanceleaf Goldenbanner can be propagated through seeds, division of clumps. Similar propagation techniques also apply to california false lupine plant care, which shares the same genus.
Is the Lanceleaf Goldenbanner Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Lanceleaf Goldenbanner, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Lanceleaf Goldenbanner?
Lanceleaf Goldenbanner is susceptible to aphids, leafhoppers, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Lanceleaf Goldenbanner Need?
Lanceleaf Goldenbanner grows outdoors in USDA Zone 3a – 9b. It survives winters down to planting zone 3a. Lanceleaf Goldenbanner is native to Russia (Siberia), Kazakhstan, Mongolia, Nepal and China.
Hardiness Zone
Zone 3a – 9b
Keep exploring plants
Lanceleaf Goldenbanner is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Thermopsis genus — compare its care with other Thermopsis species on PlantoScan.
Thermopsis is part of the Fabaceae plant family — browse all Fabaceae genera and species.
Lanceleaf Goldenbanner thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Thermopsis lanceolata R.Br., family Fabaceae (first published in Hortus Kew. 3: 3 (1811)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Lanceleaf Goldenbanner, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 3a – 9b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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