Dracaena

Dracaena is a genus of 198 species of plants that include tropical herbaceous or woody perennials and broadleaf evergreen shrubs and trees and is in the asparagus family (Asparagaceae). These plants are native to the Tropics and Subtropics of Africa, Australia, Central and South America, and Southeast Asia. The genus name is derived from the Greek word drakaina meaning a "female dragon." Several species of this plant are cultivated as houseplants due to their ornamental foliage. 

The plants of this genus prefer bright, indirect sunlight, and moist, well-drained potting mix with a slightly acidic pH. It is best to allow the top inch of the soil to dry out between watering. These plants are sensitive to tap water that contains salts, chlorine, and fluoride and can cause browning of the leaf tips. Filtered water or rain water may help prevent this problem. They will thrive in warm temperatures between 60 to 75 degrees Fahrenheit and in moderate to high humidity. These plants are hardy in zones 10 to 12 and need to be protected from frost. Dracaenas can be propagated by stem cuttings or rhizome division. Some species (those that were formerly classified as Sansevieria) can be propagated from leaf cuttings, although the resulting offspring might differ from the parent plant because of the chimeral nature of their leaf variegation.

Members of this genus have varying growth habits. They may be single erect stems, cane-like main stems, or branching  stems. Some species have spear-shaped or grass-shaped leaves that are arranged in a rosette. The plant size also varies depending on the species. When grown indoors they may range from 2 feet to 10 feet tall and 1 to 2 feet wide, and they can be much larger outdoors in their native habitats. The leaf color can be solid, variegated or striped in shades of green, red, yellow, or white. Indoor plants typically do not produce flowers or fruits. The flowers are small and fragrant with white or yellow blooms. The fruits produced are in the form of berries.

If ingested, Dracaenas are toxic to cats and dogs. Some species have been reported as toxic to humans as well, if ingested. Exercise caution if these plants are in the presence of pets or small children.

The Snake Plant or Mother-in Law's Tongue is a very popular houseplant. Until recently it belonged to the genus, Sansevieria. Molecular genetic research has revealed that the species formerly in Sansevieria are merely a specialized, succulent lineage within the genus Dracaena. They have been reclassified accordingly.

Dracaenas are attractive and adaptable, and have environmental benefits, too. They can improve the air quality in your home by removing toxins such as benzene or formaldehyde. They are low maintenance, easy to grow, and some are believed to bring good luck. The different species of this genus offer a wide range of plants for either indoor or outdoor use. 

Insects, Diseases, and Other Plant Problems:  Monitor for thrips, mealybugs, aphids, scale, fungus gnats, and spider mites. Root rot can occurs if the soil is overly moist. Fungal leaf spot  will result if the leaves are gotten wet with watering. Brown leaves can be the result of low humidity or the buildup of salt in the soil. Direct sunlight can scorch the leaves, and yellowing leaves can be caused by overwatering.