#21 Perilla
Image Credits: Home Stratosphere
Perilla grows so quickly in warm, moist conditions that it can become a four-foot-tall (100-cm tall). Grow in USDA hardiness zones 3 through 10 as an annual.
#22 Plume Poppy
Image Credits: Home Stratosphere
Plume poppy is an impressive background plant bearing large, scalloped leaves and huge numbers of tiny, dainty, creamy-white flowers. Its 5- to 8-foot (125 to 200 cm) habit makes it a great plant for fences and walls.
#23 Red Hot Poker
Image Credits: Gardenloversclub
Here is a beautiful annual plant and it’s also a great addition to high-altitude gardens. Red hot poker requires full sun.
#24 Rose Mallow
Image Credits: Gardenloversclub
Butterflies love this bushy plant with angelic-white blossoms with a red or purple center. It a favorite in well-watered, sunny locations in USDA hardiness zones 5 through 9.
#25 Russian Sage
Image Credits: Healthfully
Russian Sage has fragrant blue flowers and silvery foliage. Russian sage thrives in full sun and in well-drained soil in USDA hardiness zones 5 through 9.
#26 Snapdragon
Image Credits: Home Stratosphere
Snapdragons are a great choice for planting that you need to be seen from a distance, growing up to 3 feet (75 cm) tall. Snapdragons can be adapted to USDA hardiness zones 4 through 10.
#27 Sneezeweed
Image Credits: Unknow
Each flower has an eye of amber or dark yellow that is shaped like half of a protruding ball. Sneezeweed grows 3 to 5 feet tall and grows in USDA hardiness zones 3 through 9.
#28 Sunflower
Image Credits: The Ofy
Annual sunflowers are American plants in well-watered, loamy soils. Even in less than ideal conditions sunflowers will achieve heights of 3 to 7 feet (75 to 175 cm). Grow in sunny locations in USDA hardiness zones 2 through 11.
#29 Tree Senna
Image Credits: Dreamstime
Here’s a flowering shrub that grows to a height of about 3 feet (about a meter). It tolerates light frosts and is a perennial in USDA hardiness zones 9 through 11.
#30 Valerian
Image Credits: Gardening Soul
The flower is a halo of lacy, dainty white blossoms that look like (but don’t smell like) the flower baby’s breath. Valerian stands up well to cold weather.
