The African violet is among the most popular of houseplants with annual North American wholesale sales exceeding 35 million dollars. It is the fourth most important potted flower crop in Ontario. This popularity is due to its ability to thrive under conditions commonly found in most homes, and its usefulness as a specimen plant, center piece, or feature in dish gardens.
These compact little plants come in a wide variety of shapes and colors. Discovered in 1892, growing wild in the mountains of what is now Tanzania, in southeast Africa, African violets are available everywhere from your local garden center to the corner grocery.
When picking Ontario African violets, inspect the plants carefully for insects or disease. Do not purchase plants with mushy brown blooms or buds, or streaked, misshapen leaves with irregular yellow spots. Signs of insect infestation include a white cottony "dust" on the leaf stems (mealy bugs) or tiny green, red or yellow "specs" or webbing on leaves or buds (spider mites).
African violets enjoy bright, diffused sunlight or artificial light and lots of it. They also like higher humidity and warm temperatures, making them ideal for the bathroom windowsill--especially if that window faces north or east.
Keep the soil evenly moist (not wet!) and water the plant from the bottom to avoid water spots on the leaves. Simply set the container in a saucer of tepid water for about 20 minutes and allow the soil to absorb the water. Don't leave the plant sitting in water for much longer or you run the risk of over watering, which can cause root rot and kill the plant. African violets seldom need pots larger than 4 inches in diameter. The danger of over watering increases if the pots are too big.
Use either special African violet fertilizers or a houseplant fertilizer high in phosphorus. A very dilute fertilizer solution at each watering keeps growth constant and eliminates any chances of over fertilization.