Many seed grown annuals can easily be used to portray a tropical look. Castor beans grow into huge imposing plants, 6-8 feet tall with large colorful leaves and interesting flowers and seedpods.

Zone 6: Tailored Seed Starting for Moderate Climates ... This extended indoor period is ideal for growing tropical plants that require a warm and stable environment to thrive.

Most palms are tropical plants and require a frost-free climate ... which can be grown in cooler regions including US hardiness zone 6 - some of the toughest palm trees.' Live needle palm trees ...