In this video Martha Stewart demonstrates how to make a home water garden in a container. Some of the main points she covers are:

1. Choose a waterproof container of any size or shape.

2. Select plants that are easily grown in indoor or outdoor water gardens.

3. Place potted plant in container, and cover with several inches of gravel to weigh down.

4. Fill container halfway with water using a slow hose or watering can.

5. Place in bright location, and keep water level consistent.

The plants that Martha discusses in the video include:

Umbrella Papyrus (Cyperus involucratus)
Umbrella papyrus, which has slender grasslike leaves that fall like an umbrella, can grow to 10 feet tall.

Elephant Ear (Colocasia esculenta)
A tropical perennial, the elephant ear’s corm, or plant stem, is used for food but it must be cooked. It is also known as “taro” or “black magic” because of the dark purplish color on the leaves.

Blue Rush (Juncus patens ‘Carman’s Grey’)
Although it produces brown flowers, the blue rush’s tall, blue foliage makes it unique.

Water Hyacinth (Eichhornia crassipes)
The water hyacinth, a free-floating perennial has roots that hang below water and a bulbous base that allows it to float. Its leaves are beautiful and shiny, and it produces lavender to pinkish flowers.

Resources
All the plants that Martha talked about are readily available at most gardening centres.