Specific Plumeria cultivars can be found and purchased from reputable nurseries, horticultural societies, or online vendors specializing in Plumeria plants. Garden expos, horticultural events, and plant shows are also great places to find a wide selection of cultivars. Many nurseries and online retailers provide catalogs or websites that showcase the available cultivars along with descriptions of their characteristics and flower photos. It’s essential to verify the cultivar’s name and characteristics before purchasing to ensure you get the desired Plumeria variety. Additionally, joining local or online Plumeria enthusiast groups can help connect with other collectors and enthusiasts who may be willing to share or trade specific cultivars.