What is cattail (typha)?
Top Cattails have tall, strap-like leaves with the familiar brown bloom stalk. Cattail can be invasive if not kept containerized. There are various sizes from dwarf (3′) to full size (7′). They are hardy to zone 2 or 3. 68: What is papyrus (cyperus)? Top Papyrus comes in a variety of sizes from giant (6-10′) to dwarf (30″). All forms have spiky growth with a bushy head at the end of each stalk. Forms tight clumps that can be divided frequently. It is hardy to zone 9. 69: 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 fis
