Watermelon Begonia

Watermelon Begonia should be watered when the top 1–2 inches (2.5-5 cm) of the soil is dry. Be sure to avoid over-watering — let the soil dry out between waterings and water only lightly to avoid any root rot. During winter months, reduce watering to keep the soil slightly moist.

Watermelon Begonia needs a bright indirect light to maintain its bright coloration. Direct sunlight will burn its leaves, while too little light will cause its patterning and colors to fade. If your plant is growing in too low of light it might become 'leggy' — its stems will grow elongated and weak. Move it to a brighter spot immediately.

Watermelon Begonia thrives best in temperatures between 65 and 80°F (18-27°C). When temperatures drop closer to 50°F (10°C) the plant will become semi-dormant, and growth will be slower during this period.

While Watermelon Begonia will do just fine in average room humidity, it will appreciate more humid environments. Increase humidity around your plant by using a humidifier, placing it on top of a pebble tray filled with water, or by regularly spraying it with water.

Watermelon Begonia should grow in a loam-based potting mix that is moist, well-draining, and nutrient-rich. You can purchase a mix specifically formulated for houseplants or make your own by combining peat moss, vermiculite, and perlite in equal parts.

Watermelon Begonia should be fertilized during spring and summer when it's actively growing. Use a water-soluble houseplant fertilizer at half-strength or, alternatively, you could use a slow-release pellet fertilizer. Let the soil dry between water and fertilizer applications to avoid any root burn.

Watermelon Begonia is pretty robust when it comes to pests, but can be harmed by mealybugs, aphids, and spider mites. Fortunately, keeping humidity around the plant high and keeping any dead or decaying foliage away will help to prevent these pests from infesting it. If these pests are present, you can wipe them off with a cotton swab dipped in rubbing alcohol or treat the plant with insecticidal soap.

Watermelon Begonia should be repotted every 1-2 years with fresh, sterile soil. Try to pick a slightly larger pot — around 1-2 inches (2.5-5 cm) in size — than the one in which it was originally planted. Repotting should be done during spring or early summer when the plant is actively growing.

Occasional pruning will help to maintain the shape of the Watermelon Begonia and promote bushy, even growth. Pinch off any leggy stems with your fingers and remove any stem tips that have died or begun to dry out. Don't forget to sterilize the scissors with rubbing alcohol before and after each cut.

Mulching is not necessary for Watermelon Begonia, but you can add a thin layer of organic matter or light gravel around the plant's base to help with moisture retention and improve the soil's nutrient quality.

Watermelon Begonia can easily be propagated by taking stem cuttings during the spring or summer. Take 3-4 inch (7-10 cm) cuttings with several leaves, and let them dry out overnight. Then, dip each cutting in rooting hormone and place in a well-draining potting mix. Cover the pot with clear plastic and mist the plant to keep the soil moist. With proper care, the cuttings will root within a few weeks.

Watermelon Begonia does not need any type of support when it is young. As it matures, it may require some light pruning to keep it from straggling. If the plant draws too much weight, you may add a stake to help keep it upright.

Watermelon Begonia rarely needs a period of dormancy, and can do without one provided it receives the right amount of light and water. During winter months it may go into a semi-dormant state, with fewer flowers and slower growth. This is natural and to be expected.

Watermelon Begonia is not toxic to cats or dogs. However, ingesting large amounts of any plant material can lead to digestive problems, so it's best to keep your pet from munching on the leaves.