BUFFALO, N.Y. — The African violet is one of the world’s most common houseplants. You can buy it at Lowe’s. You can get it at the nursery. You can find it in the grocery store. But in the wild, this ...

Q: Why won’t my African violets bloom? They’re in the same conditions where they used to blossom beautifully, but I haven’t seen a flower for the last two years. A: African violets are capable of ...