Described as easy for beginners this houseplant also has a range of varieties that require the experience of more advanced gardeners. Some of these plants are grown for their flowers and others for their striking leaves. As you will see from the picture the plant is of course the begonia. I found an article by Dr Leonard Parry from the University of Vermont which explains how to care for these plants.

Begonias are an easy houseplant for beginners, with a range of species and selections for the more advanced gardeners.? Some are grown for flowers, others for their foliage.? They come in a range of sizes, shapes, and habit, from upright to spreading.? Many tolerate low light, and they have few if any pests.
Let?s deal first with the main need for begonias indoors, especially in buildings with forced air heat, that being to increase humidity levels around plants.? You can keep a misting bottle (as found in hardware or home stores) nearby and mist plants daily.? If this will harm walls or furniture, try a humidifier (this will help the air for you as well).? Placing plants on a tray of pebbles, and keeping this moist by watering the pebbles every day or two helps.? If plants are under lights, or some form of plant stand, you can place plastic over and around this to maintain higher humidity within the ?tent.?? Many begonias will tolerate some dry air, but won?t thrive.
Keep plants watered, but not too wet.? If in doubt, don?t water.? Let soil dry between watering, then water thoroughly so water drains out the bottom of pots.? But don?t let plants sit in a saucer of water.? You can place water in a saucer under pots, letting the soil wick-up and absorb the water, just make sure to drain any left after an hour or two.
So what soil mix is best for begonias?? Use a soil-less mix, one formulated just for indoor plants and usually containing peat moss and perlite or vermiculite.? Don?t use amendments as you would in the garden, such as compost, nor garden soil.? These may be good in the garden but behave quite differently in pots, keeping plants too wet and often introducing diseases.
Begonias don?t like too large of a pot, preferring to be pot bound.? If you have a plant that takes days to dry out, perhaps the pot is too big and you should repot into a smaller pot.? If pots are too large, the mix remains wet for too long and often leads to root diseases.

Read more at University of Vermont
Image source: Serres Fortier