Eupatorium pilosum, common name rough boneset, is a rare North American species of plant in the family Asteraceae. It is native to the eastern and south-central United States, found in every coastal state from Massachusetts to Texas, and as far inland as Kentucky.Eupatorium pilosum is a perennial herb sometimes over 100 cm (40 inches) tall, spreading by means of underground rhizomes. The plant produces large displays of large numbers of tiny flower heads, each with 5 white disc florets but no ray florets.
Rough boneset has strong resistance to disease and is generally unlikely to develop illnesses. However, it can be affected by pests and diseases present nearby. Such infections are usually mild. Regarding care, this plant needs moderate maintenance. It should be pruned regularly to keep a neat appearance and promote healthy growth. Fertilizing can also help encourage flowering. Rough boneset is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive plant-care experience. It may require more attention when grown indoors.
How to keep Eupatorium Pilosum.
Light
Rough boneset is a sun-loving perennial herbaceous plant that originates in open habitats and commonly thrives in meadows and grasslands. It prefers full sun but can also tolerate partial sun.
Temperature
Rough boneset can tolerate a wide range of temperature conditions, though its range may still be restricted by particular combinations of moisture and heat. It grows best in warm summer climates with sufficient rainfall or irrigation. Extended stretches of cloudy, rainy weather or prolonged high temperatures raise the chances of Rough boneset dying. In winter, shielding the plant from cold improves its chances of surviving.
Fertilizer
Generally, one application of fertilizer in spring is adequate for Rough boneset, though additional feedings can maximize growth. Apply fertilizer about once a month to every six weeks. Fertilization improves leaf appearance and function, helping maintain uniform color and healthy texture. It also encourages root development and nutrient uptake for long-term plant health.
Pruning
Rough boneset plants have hairy stems and produce clusters of white flowers. To keep these plants healthy and encourage denser foliage and more blooms, it's best to prune them from early to late spring. The key is to remove any damaged stems, which helps the plant thrive. Make sure to use clean tools during pruning to prevent the spread of disease. For detailed care instructions, you can consult horticultural guides.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Eupatorium
- Family
- Asteraceae
- Hardiness Zone
- 4-9
- Mature Height
- 0.61 m to 1.22 m
- Mature Spread
- 30 cm to 61 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Deciduous
- Flower Color
- White, Yellow, Pink, Green
- Flower Size
- 0.25 cm to 0.51 cm
- Bloom Time
- Mid summer, Late summer, Early fall
- Planting Time
- Spring, Summer
- Harvest Time
- Early fall, Mid fall
Other names.
