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Study of essential oil of inflorescences showed A. purpurata leaves and flowers yield a predominance of α-pinene, β-pinene and 1,8 cineol. The two latter metabolites were identified as kumatakenin, stiosteryl-3-O-6-palmitoyl-ß-D-glucoside and ß-sitosteryl galactoside. Subextracts of leaves yielded a mixture of C28-C32 fatty alcohols, a 3-methoxyflavone and two steroid glycosides. Widely cultivated and naturalized in the tropics. Recently introduced to the Philippines. Pseudostems formed by leaf sheaths emerge from underground rhizomes. Flowers are small, white, 1 or 2, arising from the red bracts Inflorescence is a terminal spike, often pendulous, showy, up to 90Ĭentimeters long.

Large clumps, growing to 3-4 meters tall. Luyang-pula is a rhizomatous perennial, leafy herb forming New plants will bloom in about a year after planting.Alpinia purpurata (Vieill.) K.Schum. Keep them warm and in indirect sunlight until you see growth. Don't bury them - set rhizomes horizontally in the pot, then cover with 1 to 2-inches (3-6 cm) of potting mix. Propagation: Pot rhizomes in spring for summer bloom. Soil: Good-quality, all-purpose potting mixįertilizer: Feed monthly in spring and summer with a balanced water-soluble fertilizer diluted by half. But bring it back indoors when the temperature drops.these tender perennials will only tolerate temps as low as 50☏/10☌. If you scoot your container to the patio or porch for the summer, don't worry - it can take the heat. Temperature: Average room temperatures 65-75☏/18-24☌. It's a good idea to use a cool-mist room humidifier near the plant, if the air is dry. Humidity: Give tropical Alpinia purpurata as high humidity as you can indoors - 50% relative humidity is ideal. Yellow leaves are usually a sign of overwatering. Water sparingly after flowering is finished. Water: Water generously throughout the growing season, keeping the soil evenly moist. Turn the pot each week to give each side equal light exposure.

Red ginger makes a stunning floor plant in front of a sunny window. Light: Ginger flowers thrive in bright locations with some direct sun. Height: Typically 6 ft (1.8 m) or taller dwarf varieties reach about 3 ft (90 cm) Look for a dwarf variety for growing in a container. Unless you live in Hawaii or south Florida, your best bet is to check some online nurseries. You may have difficulty finding Alpinia purpurata for sale in garden centers. Stop fertilizing after flowering is over. Cut back on watering, but don't allow the soil to dry out. Use a pot with drainage holes to prevent soggy soil. Red ginger flowers best when pot-bound, so keep the rhizome roots crowded in the container. Repot in spring only to replace with fresh potting medium. Its large leaves and bold color make a dramatic statement wherever you display it. Flowering ginger makes an ideal potted plant for the sunroom, warm greenhouse or any brightly lit room. Give your plant plenty of light to make this tropical beauty bloom. What these three have in common is a preference for bright light and high humidity. Make your own tropical paradise in any sunny room by grouping red ginger with a colorful croton, lipstick plant and a Boston fern.