Plumeria, often recognized as the iconic lei flower, is a beloved tropical plant known for its striking beauty and intoxicating fragrance. These resilient trees and shrubs, native to warm regions, are strongly associated with Hawaiian culture and traditions. Their vibrant blossoms evoke images of paradise, making them a popular choice for gardeners in suitable climates.
Unraveling the Myth of “Blue” Plumeria
Despite widespread interest and marketing claims, a true, pure blue plumeria flower remains exceptionally rare, if not non-existent. The absence of delphinidin, a pigment responsible for true blue hues in other flowers, is a primary reason. While breeders work to expand the color palette, achieving a stable, genuine blue in plumeria remains a significant challenge. Some varieties advertised as “blue” typically display shades of purple, lavender, or grayish tones that can appear blue in certain light. These perceived “blue” flowers derive their color from anthocyanins, which produce a range of colors including purples, but not pure blue.
Understanding Plumeria Colors
Plumeria flowers naturally exhibit a wide spectrum of colors. Common hues include whites, yellows, and various shades of pink, from pastels to vibrant fuchsias. Many cultivars feature multi-colored blooms, blending two or more colors like white with yellow centers, or pink with orange edges. Color intensity and shade can fluctuate based on environmental factors like temperature, light exposure, and bloom age. For instance, a flower might display a deeper hue in cooler temperatures or with more direct sunlight.
Cultivars with Blue-Adjacent Hues
While a true blue plumeria is elusive, several cultivars offer colors that lean towards the blue or purple end of the spectrum. Varieties like ‘Blue Hawaii’ are described as having lavender-blue or violet tones, appearing blueish in certain lighting. ‘Purple Magic’ produces deep purple flowers that can be perceived as a very dark blue. ‘Grape Escape’ has rich, grape-like purple blooms, providing a cool, almost blue impression. These cultivars provide an alternative for those drawn to cooler color palettes, even if they don’t achieve a pure blue.
Caring for Plumeria Plants
Growing plumeria plants requires attention to fundamental care for robust growth and abundant flowering. Plumeria thrive in full sunlight, needing at least six hours of direct sun daily for best blooms. They prefer well-draining soil; water deeply, allowing the soil to dry completely between waterings to prevent root rot. These tropical plants are sensitive to cold, requiring warm, frost-free conditions, ideally above 50°F (10°C). During their active growing season, a balanced fertilizer supports healthy foliage and flower development.