Houseplant – If you decide to grow Rex Begonias, then be sure to choose the correct variety for your garden conditions. Begonias are best grown in full sun, and they prefer not being over-watered, so provide good drainage.
What is Rex Begonia
Red Begonias are, in fact, not red at all. The plants you see in the supermarkets are green. The red color comes not from the flower but from the leaves. And not from the leaves themselves, which would be red, but from the veins in the leaf. The veins turn red when the leaf is stressed by dehydration.
But even though they’re not red, the red begonias are attractive. In humans, red and green are complementary colors: they look good together. In plants, red and green are opposite colors: they look good separately.
The leaves of a red begonia bear three leaflets, arranged like the letter E. These leaflet leaflets are elongated and narrow, with serrated edges. Usually, the leaves are almost black, but in sunnier conditions the veins turn bright red.
Rex Begonia Growing Tips & Care
Rex begonias are favorites in tropical and subtropical regions. They will grow well outdoors in warm regions. These plants can also be grown in pots. As Rex Begonias are a tropical plant, they do not require much pruning, as too much pruning will only stunt the growth of the plant. However, if you must prune, be sure to cut only dead or dying stems.
Wherever possible, plant Rex Begonias in a warm, sunny spot, and away from strong winds. The plant should be watered frequently, but not over-watered. Rex begonias like to be watered from below. Water the plant regularly, but do not allow the soil to dry out. It is important not to overwater, as the roots of the plant will not grow as well.
Soil for Rex Begonia
The best Rex Begonia Care includes keeping the soil evenly moist. Wait until the soil feels sticky before watering. Fertilize Rex Begonias once in the spring, and again in early summer. Focus more on the leaf area, and use a root stimulator as well.
Temperature for Rex Begonia
Rex Begonias require temperatures between 60 and 75 degrees Fahrenheit, and they require light shade in summer. If the plant does not receive any direct sun, it will wilt. The soil should be moist, but not soggy, and the soil should never dry out completely.
Rex Begonias are best grown with light, sandy, well-drained soil, and with good air circulation around them. Plant in soil that is well-draining and rich in organic matter.
Rarely, Rex begonias grow an aphid infestation. This problem can be solved by spraying the plant with insecticidal soap. Rex begonias are easy to take care of, and with the right care, they will last for many years.