lisianthus

Lisianthus, scientifically known as Eustoma grandiflorum, is a flowering plant in the gentian family (Gentianaceae). The name lisianthus is commonly used for plants in the genus Eustoma, and many cultivated varieties are sold under Eustoma russellianum in horticulture. It is native to warm regions of the Americas, including the southern United States, Mexico, and the Caribbean, and is widely grown as an ornamental plant worldwide.

The plant is a herbaceous perennial that is often treated as an annual in temperate climates. It produces tall, slender stems bearing solitary, cup-shaped flowers with multiple layers of petals. The blossoms resemble roses or tulips and can reach about 4–8 cm in diameter. Colors include white, pink, purple, lavender, blue, and bi-colors. Plants typically reach 60–90 cm in height, depending on the cultivar. Foliage is narrow and gray-green to light green.

Cultivation and care: lisianthus grows best in well-drained soil with full sun to partial shade and regular moisture. It prefers warm temperatures for flowering and does not tolerate heavy, waterlogged soil. In cooler regions it is grown as an annual or treated as a short-lived perennial, while in warmer climates it can behave as a perennial. Seeds germinate best in bright conditions at about 21–24°C; many gardeners start with transplants. For cut flowers, buds are often harvested just before opening to maximize vase life.

Pests and diseases commonly include thrips, aphids, botrytis, and powdery mildew. Lisianthus is valued for its long stems and long-lasting blooms in floral arrangements.