Thermopsis gracilis, commonly known as the slender or slim-leaved lupine, is a perennial herbaceous plant in the Fabaceae family. Native to North America, it thrives in various habitats, including meadows, prairies, and open woods.
This plant reaches up to 60 cm in height and features slender stems with alternately arranged, pinnately compound leaves comprising 7-15 narrow, elongated leaflets. These leaflets exhibit a bluish-green coloration.
In late spring or early summer, Thermopsis gracilis blooms with bright yellow flowers. These distinctive pea-like flowers, complete with five petals, grow in clusters on long stalks that rise above the foliage.
Preferring well-drained soils and thriving in either full sun or partial shade, this plant can tolerate drought conditions once established. It's notable for its ability to fix nitrogen into the soil through its root nodules, enhancing soil fertility.
Historically, Native American tribes have utilized Thermopsis gracilis for medicinal purposes, treating ailments such as respiratory infections, fever, and digestive issues.
Overall, Thermopsis gracilis is an attractive ornamental plant that adds vibrant color to gardens while also providing ecological benefits through nitrogen fixation.
Slender goldenbanner is fairly disease-resistant and typically not prone to illnesses. However, it can be vulnerable to pests and diseases present in its environment; such infections are usually mild. Care-wise, the plant needs moderate maintenance. It should be pruned regularly to preserve a neat appearance and support healthy growth. Fertilizing can also help encourage flowering. Slender goldenbanner is suitable for anyone with outdoor space, such as a garden or patio, and does not require extensive care experience. It may need extra attention when grown indoors.
How to keep Thermopsis Gracilis.
Light
Slender goldenbanner is a sun-loving, perennial herbaceous plant that originates in open habitats and often thrives in meadows and grasslands. It prefers full sun but can also tolerate partial sun.
Temperature
Slender goldenbanner can tolerate a wide range of temperatures, but its distribution may still be restricted by different combinations of moisture and heat. It grows best in warm summer climates with adequate rainfall or regular watering. Extended periods of cloudy, rainy weather or prolonged high temperatures can increase the likelihood of Slender goldenbanner dying. In winter, shielding the plant from cold can improve its chances of survival.
Fertilizer
For Slender goldenbanner, the ideal time to fertilize is in early spring when the flowers are developing. The proper fertilizer promotes better blooms and helps Slender goldenbanner produce attractive flowers. Fertilizing in early spring ensures strong flowers during the season and supplies energy for dormant growth phases.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Thermopsis
- Family
- Fabaceae
- Hardiness Zone
- 4-8
- Mature Height
- 61 cm to 91 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green
- Leaf Type
- Deciduous
- Flower Color
- Gold, Yellow
- Flower Size
- 2.03 cm to 3.05 cm
- Bloom Time
- Mid spring, Late spring
- Planting Time
- Spring
- Harvest Time
- Early summer, Mid summer
