1. Garden Phlox
Garden phlox is prized for its beautiful large clusters of flowers that come in pink, purple, lavender or white and sit atop 3-4ft stems with powder-dusted foliage. It is usually used as cut flowers.
2. Globe Thistle
Globe thistle is a flowering perennial featuring stunning, exciting shape, spiky flowers in shades of deep blue or purple. Its leaves are deeply notched, dark green, slightly hairy growing on 3-4ft stems.
Geranium is a longtime favorite of gardeners because it is easy to grow, features beautiful colorful flowers and has a lovely fragrance. It is mostly found as bedding plants for gardens; however, it can be grown both indoors and outside.
Gaura has bright white flowers with red sepals that are held at the tips of long dark stems. Its light, airy texture makes it perfect for your wildflower garden.
5. Globe Flower
Globe flower, as suggested by its name, is shaped like a ball (or a globe) and blooms in spring. It has stems rising above finely textured foliage in yellow and orange hues.
Gypsophila is one of the most charismatic plants with a very thriving growing habit, making it a great symbol of everlasting love. It can be a great addition for bouquets and flower beds.
7. Giant Hyssop
Giant hyssop is a mid-west originated flowering plant with aromatic foliage. It has smoky-blue nectar-rich flowers that attract bees and butterflies.
Gerbera is a flowering plant that originated from South Africa. Its flowers come in a great variety of size and colors, from pink, yellow, salmon to white.
Gumamela is a woody shrub and small tree featuring large, showy, trumpet-shaped flowers. The petals are 4-18 cm broad and coming in a variety of colors from white, red, blue to purple.
10. Great Periwinkle
Great Periwinkle can be easily spotted in steep hillsides and banks; in fact, it is one of the most common ground cover for a green and growing effect. It is named after the attractive blooms that dot the foliage in periwinkle blue shade.
Godetia is an attractive and very showy annual flower that blooms in late spring. The flower carries four equally sized petals that are about 2 inches in diameter. It is usually found in country gardens or flower arrangements.
12. Golden Chamomile
Golden chamomile is a flowering vigorous and is mostly used as garden beds. It features shining golden daisy-like flowers in shades of yellow, from lemon to canary or creamy white.
13. Gooseneck Loosestrife
Gooseneck loosestrife, as its name suggests, features flowers on arching stems that reminds of gooseneck. The flowers come in pink, white, yellow and purple; standing well above the slender foliage.
14. Greater Masterwort
Greater Masterwort is prized for its dome-shaped flowerhead and elegant ruff of papery bracts, in soft pink, green and white. It has long wiry stems and attractive deep green leaves.
15. Garden Rock Cress
Garden rock caressed is a flowering plant featuring purple flowers that blooms in April through the middle of May. It is commonly used as ground cover because it hugs the ground like a mat.
16. Garden Stock
Garden stock is an easy to grow annual flowering plant that originated from Europe and Asia Minor. It features beautiful, spicy and sweet fragrant flowers which come in a great range of bright colours from white, red, pink, purple, yellow and lavender.
17. Grape Hyacinth
Grape hyacinth is a very small plant that only grows to about 6 to 8 inches in height. As suggested by its name, it looks like a little miniature hyacinth with flowers resembling little beads strung together along the stem.
18. Golden Dew Drop
Golden dew drop is a flowering plant featuring frilly purple flowers that attract butterflies and bees. It is mostly used to mix in with other plants in a row in the landscape to create a cottage garden style hedge.
19. Garden Angelica
Burden Angelica is a flowering plant with a flavoring agent that is used in many types of liquor including gin, and has a long history of use in seasoning and medicine. The flowers are particularly showy and umbrella-like flowers that only bloom every two years.
20. Green Strawberry Hedgehog Cactus
Green strawberry Hedgehog Cactus is originally from Texas, with large stems and long yellow / white spines. It has large pink flowers which are followed by greenish-brown fruits that taste similar to strawberries.
21. Globe Amaranth
Globe Amaranth features oval leaves that arrange alternately along thick and hairy green stems. The clustered flowers are somewhat resembling clover flowers and come in a wide range of colors from pink, yellow, white to purple.
Gardenia is a very popular ornamental shrub thanks to its fragrant flowers and beautiful foliage. Unfortunately, gardenia can require some maintenance in some areas.
Gaillardia, popularly known as blanket flowers, is a fast-grower and easy to grow perennial that is about 24-in in height. It features richly colored and daisy-like flowers in shades of red and yellow.
24. Garden Balsam
Garden balsam features double petal flowers that come in a great variety of colors, from white, red, orange, yellow, violet, to pink. The flowers are partially hidden by its large leaves with showy veins.
Gladiolus is a classic perennial known for its large, colorful blooms that are available in a wide range of colors and sizes. Gladiolus is mostly used as cutting flowers or summer bouquets.
Goldenrod bears fluffy golden flower spikes that bloom in the late summer to fall. The plant is tall and slim, and will reach its full size in just several months after planting.