'Yellow Form' Alternanthera is an easy-to-grow, tropical plant with a fast-spreading habit and pointed, chartreuse-yellow leaves. It forms a mat of color from spring's frost-free date to fall's first frost. Like others of this genus, it makes a great edging, bedding, or container plant. In formal landscapes, it can be used in a knot garden. It looks great with dark-leaved plants.

A. ficoidea ‘Red Threads’ is a slender-leaved perennial selection that doesn't wander, forming a textured carpet in shades of deep burgundy. A single plant makes a mound about 8 inches tall and 14 inches wide. It blooms on and off all year, but you may never notice. The small, pale flower buttons are held in the leaf axils, where they are nearly indistinguishable from the foliage unless you're paying close attention. Use 'Red Threads' at the base of taller plants in the border to provide vibrant color echoes or contrasts. Grow as a warm-season annual in cooler climates, mass the plants in beds, or use in a formal knot garden as the Victorians did.

Coleus are tender tropicals that are generally grown as annuals because they are hardy only in Zone 11. They are easy to grow, reliable plants known for their colorful foliage that comes in many color combinations and mixes well with other garden plants. Blue to white nettle-like flowers bloom in racemes in summer, but are not showy and tend to detract visually from the attractiveness of the plants.

An excellent chartreuse selection, 'Amazon' has ruffly leaves that glow after dusk. It doesn't burn or streak in hot summer sun and has strong stems. Coleus are tender tropicals that are generally grown as annuals because they are hardy only in Zone 11. They are easy to grow, reliable plants known for their colorful foliage that comes in many color combinations and mixes well with other garden plants.