Floating Plants
Cool Pond Services - Aquatic Plant Products
Floating plants. I like to call these the roamers. They don't stay put and they can very easily overtake your pond if it contains an abundance of nitrogen or phosphate, example: water hyacinth and duck weed (Hyacinth & Water Lettuce is illegal to buy or sell in Florida anyway.) However, they can be controlled by simply extracting large quantities of the plant out of your pond weekly. The advantages are far greater than any problems they might cause. They act as extra filtration by absorbing nutrients from the pond, make a nice treat for your koi and some even produce breath-taking flowers.
Azolla caroliniana -
Fairy MossZONE 8 - Attractive green and red floating fern. Tiny leaves. Koi love to eat this plant. Aggressive if fish are not present.
Limnobium spp. -
Frog's BitZONE 7 - Flowers July, August - Shiny smooth leaf surfaces are supported underneath by thick spongy tissue. Light green undersides show slightly for contrast. Plus many more in which to choose from !!