Also known as the polka dot begonia, the spotted begonia, and the angel wing begonia, Begonia maculata is one of the most striking begonias. It was discovered and named by an Italian taxonomist in 1820, who chose the name using the Latin word "macula" which means spotted or mottled. The spotted, elongated leaves are a dark green color that sometimes ranges from olive to forest green. The spots are a pale grey to silver color, and the undersides of the leaves are a rich burnt orange color.

The plant's unique and colorful appearance, including flowers that range from white to pink to coral, is what makes it so popular among plant enthusiasts. However, it is a temperate, tropical perennial native to Central America and can only survive outdoors in zone 10 or above, making it hard to keep it going outdoors anywhere in the USA. Growing it indoors does have some challenges, as it is rather fussy about its growing conditions. But people who love this unusual plant agree it is worth the effort.

The Begonia maculata is a tropical plant and therefore requires certain elements of care for it to flourish indoors. The main aspects of its care that should take precedence are proper watering and well-draining soil; these will help prevent root rot, which can be a problem if the soil remains wet for too long. As your begonia grows, you will want to transfer it into a larger container, and/or refresh the soil from time to time. The best time to do this is in early spring before the active growing season. Wait to transplant until the soil no longer feels loose in the container; gently shake old soil from the roots and refresh the potting soil. Refreshing the soil helps cut back on unwanted pests and diseases. This plant also benefits from deadheading and clearing away of dried or rotted plant material. Keep the surface of the soil clean from debris as well.

Light

This begonia does best in partial sunlight. Indirect sunlight is best indoors, near a window. You may want to relocate it occasionally as the sunlight moves around according to the seasons, especially in winter as daylight hours grow shorter.

Soil

The polka dot begonia prefers moist, rich soil. Since it is most often grown in containers or indoors, a good  should suffice, or a sandy loam soil. Be sure there is adequate drainage; this can be improved by adding some perlite.

Water

It's very important not to overwater your begonia. Let the soil dry out to about a half inch on the surface before watering. Overwatering can cause root rot which can eventually kill the plant. Watering no more than twice a week should be sufficient but this varies depending on humidity levels in your home also; you can gauge the right amount by checking the soil before watering.

Temperature and Humidity

This plant is rather fussy about its ideal temperature. Being a tropical, its perfect growing conditions should emulate its native areas. Temperatures between 65 and 70 are best. Temperatures below 60 degrees Fahrenheit can cause the plant to wilt. Begonia maculata needs a steady level of humidity, but not too much (45 to 50%), so using a humidifier is advisable if your home tends to have dry air. Placing it in or near the bathroom or kitchen will help increase the humidity levels. Placing saucers of water near the plant can help keep humidity consistent. However, too much humidity can cause problems such as mildew or fungal rot, so monitor your begonia for any issues.

Fertilizer

A fertilizer can be used to help liven up the blooms on your polka-dot begonia. A basic slow-release liquid fertilizer in a 10-10-10 formula should work fine; use this in spring and apply once every 2 to 3 weeks to increase blooms as needed.