Answer: It's important to have drainage holes in the pot to prevent the problem you described. Plant roots need oxygen to survive and if the soil is constantly soaked, they literally drown. In winter when growth slows, it is best to cut back on the watering somewhat; check to see if the top layer of soil is dry before you water. When you do, make sure the water soaks the rootball and isn't just running straight out between the pot and the soil. Leach the salts out of the soil once a month by allowing water to run slowly through the pot out the drainage holes.
Bridal veils likes a bright location. Fertilize about once a month with a houseplant fertilizer. When this plant becomes rangy it is a good idea to trim it back. Since your plant looked healthy for quite a while, I'm sure you'll do fine if you plant in a container with drainage holes!
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