Sanguisorba obtusa, the Japanese burnet, is a species of flowering plant in the family Rosaceae, native to Japan (Honshu). Growing up to 1.5 m (4.9 ft) tall by 1 m (3.3 ft) broad, this rhizomatous herbaceous perennial has grey-green foliage, and atttractive bright pink bottle-brush type flowers on wiry stems, in summer. In cultivation it can tolerate a range of conditions in sun or partial shade, with moist soil.
Poterium obtusum has strong disease resistance and is generally not prone to illness. However, it can be vulnerable to pests and diseases present in its surroundings. These infections are generally not serious. In terms of care, this plant requires a moderate level of maintenance. It should be pruned regularly to keep a neat appearance and support healthy growth. Fertilizing can also encourage flowering. Poterium obtusum is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive gardening experience. It may need more attention if grown indoors.
How to keep Sanguisorba Obtusa.
Light
Poterium obtusum is native to habitats like forest understories or rocky sites, where it grows under natural shade. It prefers partial sun but can tolerate both full sun and full shade, demonstrating its versatile and hardy nature.
Temperature
Poterium obtusum can tolerate a wide range of temperatures, but its distribution can still be restricted by various combinations of water and heat conditions. It performs best in warm summer climates with sufficient rainfall or watering. Extended periods of cloudy, rainy weather or prolonged high temperatures make Poterium obtusum more likely to die. In winter, protecting the plant from cold can increase its survival rate.
Fertilizer
One fertilizer application in spring is generally enough for Poterium obtusum, though multiple feedings can maximize growth. Apply fertilizer about every month to a month and a half. Fertilization improves the leaves' appearance and function, encouraging even color and a healthy texture. It also promotes root development and nutrient uptake for lasting plant health.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Sanguisorba
- Family
- Rosaceae
- Hardiness Zone
- 4-9
- Mature Height
- 30 cm to 61 cm
- Mature Spread
- 30 cm to 46 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Deciduous
- Flower Color
- Pink
- Flower Size
- 1.02 cm to 2.03 cm
- Bloom Time
- Summer
- Planting Time
- Spring, Summer
- Harvest Time
- Late summer, Early fall, Mid fall
- Native Area
- Koppen, Japan
Other names.
