Caltha palustris

A hardy, succulent perennial of marsh and waterside.

Native Americans used various preparations of the roots to treat colds and sores, as an aid in childbirth and to induce vomiting, and as a protection against love charms; infusions of leaves were taken for constipation. Poisonous Part - leaves.

Canna glauca

Narrow green leaves and spidery pale yellow or pink flowers.

Remove from water garden in fall and store rhizomes indoors.

Canna sp.

Canna Lily. Perennial growing up to 6-7 ft, with long narrow leaves and showy flowers. Tolerates flooding, grows well along waterline.

Cannas should be planted where they will have a visual impact at the height of summer. Most cannas are tall and need to be placed at the back of a bed. In their native habitat, Canna grows in shaded locations. However, for profuse flowering Cannas need full sun. The more sun, the better. Canna lilies will survive in a shady site, but they will not grow as profusely.

Like bananas, Canna lilies are heavy feeders. Provide plenty of compost and/or good liquid fertilizer to keep the plants looking their best. Without adequate fertility or moisture, Cannas look quite ugly. If your Canna lily plant looks ratty during the summer, that's a sure sign that an extra food is required.

If you're growing plants in containers, keep in mind that Canna lilies are large plants and therefore need a large container. The plants will lose vigor as they become pot-bound. When that happens, lift the root-ball, divide the canna bulbs (rhizomes) and replant. Container-grown Canna lilies will need watering once or even twice a day if grown outside, and it may help to stand the pot in a saucer of water. Provide regular fertilizer at full rate according to the instructions on the label.

Ceratopteris cornuta

This medium large aquatic fern grows as submerged, rooted plant as well as free-floating plant.

Colocasia esculenta

Var. Black Runner: a superb Colocasia and a must for black plant fanatics. Large matt black, heart shaped leaves up to 20" long, on black/purple leaf stalks. As with most elephant ears, moist soil and high nutrition are the keys to great specimens. Grow in rich, fertile moisture retentive soil or as a pond marginal in full sun for darker leaves. Note that in shade leaves turn dark green. Once moved to bright sun, they turn back to black. In cooler subtropical climates leaves die back and the plant emerges from a rhizome in spring.

Var. Mojito: This new sport of Colocasia was discovered in Florida. Incredible contrasting blacks and greens adorn its leaves. This camouflage effect is matched with light green stems streaked with dark purple that fade up to pink, with chartreuse highlights mixed in to create a totally wild and exotic scene in the summer garden. No two leaves are the same. Even the stems are highlighted with stripes. Grows more compact than other Elephant Ears, making it an excellent choice for a large container.