What is marsh marigold (caltha palustris)?
Top Marsh marigold has single or double flowers in various shades of yellow with green, glossy foliage. Marsh marigold ranges in size from diminutive forms 6″ tall to 3′ or more. Prefers cooler climates and partial shade, especially during summer. 70: What are oxygenators? Top Oxygenators are submerged plants which, in the presence of sunlight, absorb nutrients and carbon dioxide and produce oxygen. Be aware, however, that at night they give off carbon dioxide. If you have fish it’s important to provide a form of oxygenation, such as a waterfall or fountain, that runs all night. Oxygenators can usually be placed directly into the pond without the benefit of soil; simply weight a plant or rootless stems with special lead plant weights or strips cut from an empty toothpaste tube and drop them in. Most can also be planted in soil. Oxygenators provide excellent protection for newly hatched fish. Many oxygenators have somewhat fragile stems and leaves which need protection from koi. The ent
