Palm plants are hardy only in the three warmest planting zones (8, 9 and 10) in the continental United States. The few palm plants that are hardy in Zone 8 are considered cold hardy. This does not mean that the beauty of a palm plant can't be enjoyed by those who live in colder climates. Many of the palm plants can be used as potted plants indoors and survive very well. Using palm plants indoors is not a new idea. It is centuries old and still popular.
Kentra palm (howea forsteriana) also is known as the sentry palm, thatch palm, paradise palm, hotel palm and parlor palm. The tree has been a favorite indoor plant since Victorian times. It is easy to grow and is a good choice for growing in containers or indoors. It produces feather-like leaves with leaflets that are dark green on top and light green on the bottom. The flowers are white, and the fruit is egg-shaped and dull red in color. Kentia palms are slow growers, which means they can be left in the same pot for many years. The plant should be kept in the same amount of light that you would use when reading. Kentia can tolerate low interior light levels, dust and interior heating. Over-watering can cause the plant to contract the fungus Phytophthora.
Hardy Bamboo Palm
Hardy bamboo palm (chamaedorea microspadix) is a fast growing palm but also one of the smallest. It will grow only to a height of about 8 feet outdoors and often is planted under taller trees, which makes it a good choice for an indoor plant. The tree produces feather-like leaves and male or female flowers. If the tree has female flowers and a tree with male flowers is nearby for pollination, the tree with the female fowers will produce small, bright-orange berries. It does well in low light and can take cool temperatures.
Radicalis palm (chamaedorea radicalis) is one member of the palm family that does not have a trunk, at least not when it is young. It is a slow-growing dwarf palm that develops a short trunk after many years. It will grow only to a height of about 4 feet. Planted in a pot by itself, the radicalis plan will spread out more than it will grow up. The tree will produce from six to eight leaves of about 3 feet in length. It has small flowers and red berries on the plants with female flowers. When the radicalis palm is grown indoors, it should be given bright, indirect light. The radicalis palm can be planted in a container by itself or in combination with other plants.