What is the right number of plants to have in a water garden?
A healthy pond has a combination of plants, both submerged and floating. The addition of fish creates an added dimension but because fish need oxygen to survive, you will need to keep half the surface of the pond free from plants. As a general guideline, per square foot of pond surface 1 bunch of submerged plants, 1 water lily or floating plant that will cover 60 to 70 percent of the surface, 1 bog plant for height should be sufficient.