Orange, Citrus sinensis, is an evergreen tree in the family Rutaceae grown for its edible fruit. The orange tree is branched with a rounded crown and possesses elliptical or oval leaves which are alternately arranged on the branches. The leaves have narrowly winged petioles, a feature that distinguishes it from bitter orange, which has broadly winged petioles. The tree produces white flowers singly or clustered on a raceme. The fruit is a spherical berry with a green-yellow to orange skin covered in indented glands and a segmented pulpy flesh and several seeds. Orange trees can grow to a height of 6–15 m (16–49 ft) and can live for periods in excess of 100 years. Most plantations have an economic lifespan of around 30 years. Orange may also be referred to as sweet orange or navel orange and is believed to have originated from a wild ancestor in the border between Vietnam and China.
Here are some step-by-step instructions for caring for Mandarin plants: Exposure/Light: Mandarin plants prefer bright indirect light, near but not in a west or south window. Prolonged periods of direct sunlight and/or touching hot glass will cause the plant to sunburn. In low light levels, the bright color of the stems would fade. In the winter months, you may have to move your Mandarin Plant to a brighter spot so it gets the bright light it needs. Watering: Mandarin plants have low to average water needs. Water them when it’s dry or almost dry. Be sure to let the water drain through the pot, and if there’s a saucer under it, don’t let it sit in any built-up water. Depending on how warm and bright your house is, watering might be every 10-21 days. Temperature: Mandarin oranges are subtropical plants and grow best in regions with a pronounced change in season. They will grow best at temperatures between 12.8 and 37.8°C (55–100°F) during the growing season and 1.7 to 10°C (35–50°F) during dormancy. Humidity: Mandarin plants prefer moderate humidity levels between 40% and 60%. If your home is dry, you can increase humidity by placing a tray of water near the plant or using a humidifier. Fertilizer: To keep your mandarin plant happiest, fertilize in spring and summer with a general-purpose fertilizer formulated for houseplants. Follow the instructions on the product packaging for application rates. Soil / Repotting: Mandarin plants grow best when planted in a well-draining sandy loam with a pH between 6.0 and 7.5. Repotting should be done every two years or so, or when roots start to grow out of the drainage holes at the bottom of the pot. Pruning: Mandarin plants typically don’t need pruning, except to remove old leaves as they age out. Propagation: Mandarin plants can be propagated by division or by rooting stem cuttings in water or soil. Pests: Common pests that affect mandarin plants include spider mites, scale insects, mealybugs, aphids, and whiteflies. Keep an eye out for these pests and treat them promptly if you notice any signs of infestation. Pet Safety: Mandarin oranges are not toxic to pets such as cats and dogs.