Germander -A group of mostly Mediterranean natives known for their toughness, withstanding heat, drought, and poor soils. Quite varied, teucriums are grown for their attractive forms and textures. Use in rock gardens, as a hedge, or in knot gardens. They often have pleasantly pungent foliage when the leaves are crushed.
Thalictrum
Thunbergia
Tender tropical perennials, mainly grown for their exotic, brilliantly colored trumpet-shaped flowers. Most bloom all warm season. Can be used in containers in colder zones.
Thymus
Thyme -Large mint group containing micro-shrubs to matting groundcovers. Grown for their culinary and ornamental qualities. The essential oils contain antiseptic, disinfectant, and deodorant properties. Ideal in rock gardens, containers, or as groundcover. Frequently used as a border for an herb garden or between stepping stones.
Tibouchina
Glory Bush -Tender shrubs mostly from tropical South America, commonly known as the Princess Flower, with showy blooms over a long season. Leaves are hairy and deeply veined with a tropical appearance, while the flowers have brilliantly vivid purple petals and equally colorful stamens. These make good container plants, preferring ample feeding and moderate to regular water. Outstanding plant in light shade near the coast.