You can keep paperwhites and amaryllises from stretching and leaning by placing them close to a bright window and rotating the pot 90 degrees once a day. Add a little rubbing alcohol to the water to keep them stouter.
Adrian Higgins has been writing about gardening, landscape design and related environmental topics since the late 1980s. He joined The Washington Post in 1994. He is the author of several books, including the “Washington Post Garden Book” and “Chanticleer, a Pleasure Garden.”