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Description
Helianthemum Nummularium Wisley Primrose, also known as the rock rose or sun rose, is a small perennial plant that belongs to the Cistaceae family. It is native to Europe, where it grows in rocky and dry habitats, but it has also been introduced to North America and other parts of the world. The plant produces a profusion of bright yellow flowers with five petals that bloom from late spring to early summer. The flowers attract bees, butterflies, and other pollinators, making it a popular choice for gardens and landscapes.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Malvales |
| Family | Cistaceae |
| Genus | Helianthemum |
Appearance
Helianthemum Nummularium Wisley Primrose is a low-growing plant that typically reaches a height of 10-20 cm and a spread of 30-40 cm. It has evergreen leaves that are small, oblong, and gray-green in color. The leaves are covered with fine hairs that help the plant retain moisture in dry conditions. The flowers of the plant are the main attraction, with bright yellow petals that are about 2 cm in diameter. The flowers grow in clusters at the end of the stems and have a short flowering period of about 3-4 weeks. After flowering, the plant produces small, brownish seed pods that contain numerous seeds.
Care Guide
Helianthemum Nummularium Wisley Primrose is a relatively low-maintenance plant that requires minimal care. Here are some tips on how to care for this plant:- Water: The plant prefers well-drained soil and does not like to be overwatered. Water the plant deeply once a week during the growing season, and reduce watering during the winter months.- Fertilization: The plant does not require regular fertilization, but you can apply a balanced fertilizer once a year in the spring to promote healthy growth.- Soil: The plant prefers well-drained, sandy soil that is slightly acidic. If the soil is heavy or clayey, amend it with organic matter to improve drainage.- Sunlight: The plant requires full sun to grow and bloom. Make sure the plant receives at least 6 hours of direct sunlight per day.- Hardiness Zones: The plant is hardy in USDA zones 5-9.
Common Pests & Diseases
Helianthemum Nummularium Wisley Primrose is generally pest and disease resistant, but it can be susceptible to root rot if the soil is too wet. Here are some common pests and diseases that may affect this plant:- Root rot: This is caused by fungi that thrive in wet soil. To prevent root rot, make sure the soil is well-drained and avoid overwatering.- Spider mites: These tiny insects can suck the sap from the leaves and cause them to turn yellow or brown. Use an insecticidal soap to control spider mites.- Aphids: These small insects can also suck the sap from the leaves and cause them to curl or yellow. Use an insecticidal soap to control aphids.
Habitat
Helianthemum Nummularium Wisley Primrose is native to Europe, where it grows in rocky and dry habitats such as hillsides, cliffs, and meadows. The plant is adapted to arid conditions and can tolerate drought and high temperatures. It has also been introduced to North America and other parts of the world, where it is grown as an ornamental plant in gardens and landscapes.
Question and Answer
Q: Is Helianthemum Nummularium Wisley Primrose a good plant for beginners?
A: Yes, this plant is relatively easy to care for and does not require a lot of maintenance.
Q: How often should I water Helianthemum Nummularium Wisley Primrose?
A: Water the plant deeply once a week during the growing season, and reduce watering during the winter months.
Q: Can I grow Helianthemum Nummularium Wisley Primrose in a container?
A: Yes, you can grow this plant in a container as long as it has good drainage and receives plenty of sunlight.
Q: How do I propagate Helianthemum Nummularium Wisley Primrose?
A: You can propagate the plant by taking stem cuttings in the summer and rooting them in a well-draining soil mix.
Related Plants
– Helianthemum ‘Ben Ledi’- Helianthemum ‘Fire Dragon’- Helianthemum ‘Henfield Brilliant’- Helianthemum ‘Pink Angel’- Helianthemum ‘Wisley Primrose’
References
– RHS. (2021). Helianthemum nummularium ‘Wisley Primrose’. Retrieved from https://www.rhs.org.uk/Plants/15201/Helianthemum-nummularium-Wisley-Primrose/Details- Missouri Botanical Garden. (2021). Helianthemum nummularium. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d800
