Yes
No. Vinca Minor, also known as Lesser Periwinkle, originates in Europe, whereas Vinca Rosea (correctly named Catharanthus roseus), also known as Madagascar Periwinkle is endemic to Madagascar.
Vinca Rosea
'Sada-Bahaar'.
Yes, Vinca rosa (commonly known as Madagascar periwinkle) and Vinca minor (commonly known as lesser periwinkle) are related as they both belong to the Apocynaceae family. They are part of the same genus, Vinca, but they are distinct species with different native habitats and characteristics. Vinca rosa is native to Madagascar, while Vinca minor is native to Europe and parts of Asia. Both plants are known for their attractive flowers and are often used in landscaping.
The common periwinkle is the source of a widely used chemotherapy drug. It is used to treat lymphomas and other childhood cancers.
Vinca rosea, commonly known as Madagascar periwinkle, exhibits a simple, opposite leaf arrangement with a reticulate or net-like venation pattern. The primary veins run parallel to each other and branch out into smaller veins that create a network throughout the leaf. This venation helps in supporting the leaf structure and facilitating efficient nutrient transport.
Vinca minor 'Alba'
15cm should be fine
Periwinkle, also known as Vinca major and Vinca minor, will survive snow in climates as cold as USDA zone 6.
Vinca alkaloids were discovered in the 1950s when researchers found that extracts from the Madagascar periwinkle plant (Vinca rosea) showed anti-cancer properties. Further research led to the isolation and identification of alkaloid compounds vincristine and vinblastine, which are now widely used in cancer treatment.
Catharanthus roseus or Vinca rosea (basionym)
Yellowing leaves at the base of vinca minor could be due to overwatering, poor soil drainage, or lack of sunlight. Check the soil moisture levels, ensure proper drainage, and consider trimming nearby plants that may be shading the vinca. Additionally, fertilize the plant with a balanced fertilizer to promote healthy growth.