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Description
Rosa Rugosa Blanc Double De Coubert is a stunning rose plant that produces large, fragrant, double white flowers that bloom from early summer to fall. This hardy plant grows up to 6 feet tall and 5 feet wide, making it a perfect addition to any garden or landscape. Its dark green, glossy foliage provides an attractive backdrop to the beautiful blooms.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Rosa |
Appearance
The Rosa Rugosa Blanc Double De Coubert produces large, fragrant, double white flowers that can reach up to 4 inches in diameter. The petals are arranged in a cup shape, and the flowers bloom in clusters. The plant’s dark green foliage is glossy and leathery, with a slightly wrinkled texture. The leaves are oval in shape and can grow up to 4 inches long.
Care Guide
The Rosa Rugosa Blanc Double De Coubert is a hardy plant that is easy to care for. Here are some tips:
- Water: Water the plant deeply once a week, especially during the hot summer months.
- Fertilization: Fertilize the plant once a month during the growing season with a balanced fertilizer.
- Soil: Plant the Rosa Rugosa Blanc Double De Coubert in well-draining soil that is rich in organic matter.
- Sunlight: The plant requires full sun to thrive, so plant it in a spot that receives at least 6 hours of direct sunlight per day.
- Hardiness Zones: The Rosa Rugosa Blanc Double De Coubert is hardy in USDA zones 3-9.
Common Pests & Diseases
The Rosa Rugosa Blanc Double De Coubert is generally resistant to most pests and diseases. However, it may occasionally be affected by aphids, spider mites, and black spot. Regularly inspect the plant for signs of pests and diseases, and treat them promptly if necessary.
Habitat
The Rosa Rugosa Blanc Double De Coubert is native to Japan, China, and Korea, and is commonly found along the coastlines of these countries. It grows well in sandy, salty soils, and is tolerant of harsh coastal conditions. In addition to its ornamental value, the plant is also used for erosion control and in coastal restoration projects.
Question and Answer
Q: Can the Rosa Rugosa Blanc Double De Coubert be grown in containers?
A: Yes, the plant can be grown in containers, but make sure the container is large enough to accommodate the plant’s roots.
Q: How often should I prune my Rosa Rugosa Blanc Double De Coubert?
A: Prune the plant in late winter or early spring before new growth begins. Remove any dead or damaged branches and shape the plant as desired.
Q: Does the Rosa Rugosa Blanc Double De Coubert have any special soil requirements?
A: The plant prefers well-draining soil that is rich in organic matter. It can tolerate a wide range of soil pH levels, but prefers slightly acidic soil.
Q: Can the Rosa Rugosa Blanc Double De Coubert be propagated by cuttings?
A: Yes, the plant can be propagated by softwood or hardwood cuttings taken in late spring or early fall. Dip the cuttings in rooting hormone and plant them in well-draining soil. Keep the soil moist and the cuttings in a shaded area until they root.
Related Plants
- Rosa ‘Blanc Double de Coubert’
- Rosa ‘Hansa’
- Rosa ‘Pink Grootendorst’
- Rosa ‘Thérèse Bugnet’
References
- “Rosa Rugosa Blanc Double de Coubert.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c865
- “Rosa Rugosa Blanc Double De Coubert.” Royal Horticultural Society. https://www.rhs.org.uk/Plants/101682/Rosa-Rugosa-Blanc-Double-de-Coubert/Details
- “Rosa rugosa.” PlantNet. http://www.plantnet-project.org/en/BotanicalName/Rosa+rugosa
