1. Texas Nipple Cactus
Texas Nipple Cactus is the common name of Mammillaria Prolifera, a low-growing cactus that is adorned with many yellowish-white flowers and scarlet, cylindrical fruits in spring.
2. Toad Lilly
Like toads, Toad Lily prefers moist, shady areas. But it is much more charming, because of the beauty of its orchid-like flowers, speckled with heavy reddish-purple spots.
Thunbergia genus that contains about 90 perennial flowering vines is largely distributed in tropical regions. One of the most famous Thunbergia species is the black-eyed Susan.
4. Tall Verbena
Tall Verbena or Verbena bonariensis is a perennial, often grown as bedding, features slender stems that stand up to 180 cm tall bears tight clusters of tiny rose-violet flowers.
5. Texas Mountain Laurel
Texas Mountain Laurel (Sophora secundiflora) is slow-growing and thrives in limestone soils. Its red-orange seeds are used in jewelry, but they (and the flowers) are poisonous.
6. Tea Rose
Tea Roses, which occurred in the West from China in the 19th century, are less common nowadays. While Hybrid Tea Roses, originally created by hybridizing the original Tea Roses and Hybrid Perpetual, are the most popular roses in the world.
Twinspur is the common name of Diascia, a genus of about 70 species originating from Southern Africa. Diascia flower has a pair of spurs at the back of each flower, hence the common name.
Native to Mexico and Central America, the Tithonia genus (Mexican sunflower) contains 15 flowering plants and is named for Tithonus, a Trojan prince who was the lover of Eos, the Dawn Goddess.
9. Tiger Lily
Tiger Lily or Lilium lancifolium, known for its showy orange flowers, speckled with dark spots, is an excellent choice for your summer garden. Be aware that it is dangerously toxic to cats.
10. Tennessee Coneflower
Endemic to the cedar glades of Tennessee, Tennessee Coneflower (Echinacea tennesseensis) is less tough than and must be grown isolated from other species in the Echinacea genus.
Tagetes, popularly known as Marigold, is a genus of about 50 annual herbs in the sunflower family. Native to the Americas, most Tagetes species thrive in agro-climatic conditions.
12. Tartarian Aster
A member of the Asteraceae family, Tartarian Aster or Aster Tataricus is a non-native perennial flowering plant and also a fundamental herb of Traditional Chinese medicine.
13. Tuberous Begonia
If your shady corners look a little dull, you may want to consider Tuberous Begonias, which bloom generously and showily in shade throughout the summer.
14. Tree Peony
Tree Peony, the vernacular name for the section Moutan of the Paeonia genus, contains woody, deciduous shrubs, widely used both as ornamental or medicinal values in China.
Thimbleweed is the common name of some plant species of the buttercup family having seed heads resembling a thimble, includes Tall Thimbleweed (Anemone virginiana), Long-headed Thimbleweed (Anemone cylindrical), and more.
16. Tall Bearded Iris
Stems ranging in height from 28 to 40 inches, and stunning 6-petal flowers coming in numerous colors and forms make Tall Bearded Iris a great addition to your landscape.
Turtlehead is a clump-forming perennial plant that is best grown in spring or summer. The hooded flowers that resemble a turtle’s beak account for the unique name.
18. Treasure Flower
Originally from South Africa, Treasure Flower or Gazania rigens is a warm-weather perennial whose flowers come in a variety of hot hues on the color wheel – yellow, orange, and red.
Native to the Mediterranean region, Thyme is a perennial herb containing 50 varieties with various flavors and scents. The herb is used for culinary, medicinal, and ornamental purposes.
Trollius genus includes 30 flowering plants that feature spherical lemon-yellow flowers. Trollius is commonly called Globeflower, related to the flower shape.
Tulip (Tulipa) is a genus of about 100 species of herbaceous bulbous geophytes that originate from Central Asia and Turkey. Tulip is the symbol of the Ottomans.
22. Tiger Flower
Tiger Flower genus (Tigridia) contains around 35 flowering plants of the Iris family. Luminously colored flowers with contrasting center spots resemble a tiger’s spot, hence the common name.
23. Transvaal Daisy
Transvaal Daisy, Barberton Daisy, and African Daisy are the common names of Gerbera, a genus of flowering plants originating from South Africa and are very popular.
Bidens, Corispermum, Coreopsis, and Desmodium are all referred to as Tickseeds, which are flowers with showy heads.
25. Tall Kangaroo Paw
Originally from Australia, Tall Kangaroo Paw (Anigozanthos) genus contains over 11 plant species whose flowers grow in fan-like rows and are covered with hairs, resembling a kangaroo paw
26. Trumpet Vine
Is a high-climbing, aggressive woody vine prized for its showy trumpet-shaped blooms that hummingbirds enjoy. Campsis radicans, Trumpet Creeper, and Hummingbird Vine are other names of Trumpet Vine.
27. Tetraploid Daylily
Tetraploid Daylilies have 44 chromosomes which gives them better features in comparison to normal Daylilies having 22 chromosomes.
28. Toyon Shrub
Toyon shrub or Heteromeles arbutifolia is a perennial shrub native plant of California and grows widely in the oak woodland and chaparral communities.