Agapanthus, Lily of the Nile
Agapanthus, or Lily of the Nile, is a perennial flower. This California flower with pretty florets is a good container plant. Learn about agapanthus.

Alstroemeria, Lily of Peru
Alstroemerias, or Lilies of Peru, are spotted perennial lilylike flowers that grow in garden containers and flowerbeds. Learn about astroemeria.

Amsonia, Bluestar
Amsonia, or bluestar, is a perennial wildflower and easy-to-grow garden plant. Each stem has five pale blue flower petals. Learn about amsonia.

Anemone, Japanese
The Japanese anemone's name comes from the Greek word for wind. Its poppylike flowers have compound green leaves. Learn about this perennial.

Anota Violacea Orchid; Rhynchostylis Violacea Orchid
Orchids are among the most beautiful flowers. Learn about growing the Anota violacea orchid, also known as the Rhynostylis violacea orchid.

Aster, Michaelmas Daisy
Aster, or michaelmas daisy, is a North American flower. You'll find garden asters in many sizes and colors. Learn about these perennial flowers.

Astilbe, Garden Spirea
Astibles, or garden spireas, are perennials with fernlike foliage, feathery plumes and long panicles. Learn to grow astilbe.

Avena Grass
Avena grass, or blue oat grass, has yellow flower spikes in summer and silvery blue leaves. See this distinctive plant and learn more about it.

Avens
Avens is a type of perennial flower. Learn about growing, propagating, and using avens.

Balloon Flower
Platycodon, a perennial, has flowers that resemble hot-air balloons. Balloon-shaped buds open to bell-shaped flowers. Learn about balloon flowers.

Baptisia, False Indigo, Wild Indigo
Baptisia, or false indigo or wild indigo is a perennial first used to produce blue dye. These blue flowers are easy to grow. Learn about baptisia.

Basket-of-Gold, Goldentuft
Basket-of-Gold, or goldentuft, is a perennial in the mustard family. The easy-to-grow foliage gives support to yellow flowers. Learn about goldentuft.

Bergamot, Bee Balm, Oswego-Tea
Bergamot, or bee balm or oswego-tea, are perennials that are constant garden favorites. Learn about these butterfly and hummingbird flowers.

Bergenia, Pigsqueak
Bergenias, or pigsqueaks, are perennials with evergreen leaves and white or pink flowers. Learn more about these easy to grow cold weather flowers.

Big Blue Lily Turf
Big blue lily turf is a type of perennial flower. Learn about growing, propagating, and using big blue lily turf.

Black Cohosh
Black cohosh is an easy-to-grow perennial useful for shading and framing gardens. Learn how to grow, propagate, and use black cohosh at HowStuffWorks.

Blackberry Lily, Leopard Lily
Blackberry lily or leopard lily is a type of perennial flower. Learn about growing, propagating, and using blackberry lily at HowStuffWorks.

Bleeding Heart
Bleeding heart, a perennial flower, has fernlike foliage and heart-shaped pendant pink or white flowers. Find out about this Dicentra favorite.

Blue to Purple Perennial Flowers
A blue or purple flower can lend coolness to a garden in the peak of summer. Learn how to use blue to purple perennial flowers in your garden.

Bluestar, Blue Dogbane, Blue Star-of-Texas
Bluestar, also known as blue dogbane or blue-star-of-Texas, is a type of perennial flower. Learn about growing, propagating, and using bluestar.

Boltonia
Boltonias are perennials that resemble asters. These American flowers have narrow leaves and white flowers in clusters. Learn about this wildflower.

Bougainvillea
Bougainvillea's pretty little flowers and deciduous vines are good for achieving a cottage look in your garden. Read about this perennial.

Bower Actinidia
Bower actinidia is a type of vine. Learn about growing, propagating, and using bower actinidia.

Bowman's-Root
Bowman's-root is a type of perennial flower. Learn about growing, propagating, and using bowman's root.

Brunnera, Siberian Bugloss
From Siberia, brunneras or Siberian Bugloss, are perennial forget-me-nots. Blue flowers were named for botanist Samuel Brunner. Learn of brunnera.

Bugleweed
Bugleweeds are a type of perennial flower. Learn about growing, propagating, and using bugleweed.

Bush Clematis, Upright Clematis
Bush clematis, or upright clematis, is a type of perennial flower. Learn about growing, propagating, and using bush or upright clematis.

Butterfly Weed, Milkweed
Butterfly weed, or milkweed, is a perennial American wildflower. The flower attracts hummingbirds and butterflies. Learn about butterfly weed.

Campanula, Bellflower
Campanula, bellflowers, are usually blue and do well in rock gardens. Varieties include clustered bellflower and peach bells. Learn about campanula.

Candytuft
Candytuft is a type of perennial flower. Learn about growing, propagating, and using candytuft.

Cardinal Flower
Cardinals, deep-red tubular flowers are North American native perennials. The flower attracts hummingbirds. Learn how to grow the cardinal flower.

Carolina Lupine, Aaron's Rod
Carolina lupine, or Aaron's rod, is a type of perennial flower. Learn about growing, propagating, and using Carolina lupine, or Aaron's rod.

Catmint, Faassen Nepeta
Catmint, or faassen nepeta, is not the same as catnip. It has silvery-gray foliage with many spikes of bluish flowers. Learn more at HowStuffWorks.

Chinese Chives, Garlic Chives
Chinese chives, or garlic chives, are a type of perennial flower. Learn about growing, propagating, and using Chinese chives and garlic chives.

Chinese Forget-Me-Not
Chinese forget-me-not is a type of perennial flower. Learn about growing, propagating, and using Chinese forget-me-not.

Chinese Fountain Grass
Chinese fountain grass is a beautiful perennial that looks particularly impressive in fall. Learn about this interesting decorative grass.

Christmas Rose, Lenten Rose, Hellebore
Christmas Rose, also known as Lenten Rose or Hellebore, is a type of perennial flower. Learn about growing, propagating, and using Christmas Rose.

Chrysanthemum
Chrysanthemums are perennial members of the daisy clan. These garden mums include over 200 species, like the Shasta daisy. Learn about chrysanthemums.

Cinquefoil
Cinquefoil is a type of perennial flower. Learn about growing, propagating, and using cinquefoil.

Columbine
Columbine, the perfect perennial for cut flowers, grows in a rainbow of colors and is a hummingbird favorite. Learn how to tame this wildflower.

Coneflower, Purple
Purple coneflowers are heat tolerent flowers. The easy to grow perennials have ray flowers and work in wildflower gardens. Grow purple coneflowers.

Coralbell, Alumroot
Coralbells, or alumroots, are perennials with ornamental green, silver and purple leaves. Heucheras have white or red flowers. Learn about coralbell.

Coreopsis (Perennial)
Several coreopsis species are popular in the garden. These daisylike perennials bloom as pink, yellow, and orange flowers. Learn about coreopsis.

Creeping Buttercup
Creeping buttercup is a type of perennial flower. Learn about growing, propagating, and using creeping buttercup.

Creeping Fig
Creeping fig is a type of vine. Learn about growing, propagating, and using creeping fig.

Cupid's Dart
Cupid's dart is a type of perennial flower. Learn about growing, propagating, and using Cupid's dart.

Cushion Spurge
Cushion spurge is a type of perennial grass. Learn about growing, propagating, and using cushion spurge.

Dalmatian Bellflower
Dalmatian bellflower has purple blossoms and thrives in rocky soil. Learn about growing, propagating, and using Dalmatian bellflower at HowStuffWorks.

Daylily
The daylily, is a partial shade plant. These perennials, or everbloomers, are good container plants that live for 24 hours. Learn about daylily.

Dead Nettle
Dead nettle is a type of perennial flower. Learn about growing, propagating, and using dead nettle.

Delphinium, Larkspur
Delphinium, or larkspur, is a type of perennial flower. Learn about growing, propagating, and using delphinium, larkspur.

Dianthus, Carnation, Pinks
Dianthus, carnations, or pinks, have been popular perennials for centuries. Dianthus is great in flower beds and bouquets. Learn more about pinks.

Dry Soil Perennials
You may not know what kinds of perennial flowers can grow in dry soil. Learn which dry soil perennials to plant in your garden at HowStuffWorks.

Edelweiss
Edelweiss is a type of perennial flower. Learn about growing, propagating, and using edelweiss.

Elephant's Ear
Elephant's ear is a tropical plant with large heart-shaped leaves and prominent veins. Find a photo and learn about this perennial at HowStuffWorks.

Epimedium, Bishop's Hat, Barrenwort
Epimediums, or bishop's hat or barrenwort, have low-growing foliage of great distinction and delicate spring flowers. Learn about edpimedium.

Ferns
Ferns are perennials grown to thrive. Ferns can be evergreen. Varieties include Japanese painted and asparagus fern. Learn about these hardy plants.

Fleabane
Fleabane is a type of perennial flower. Learn about growing, propagating, and using fleabane.

Foxglove
Foxgloves are garden classic perennials. These tall plants with their bell-shaped flowers are perfect for mass plantings. Learn about foxgloves.

Fragrant Solomon's Seal
Fragrant Solomon's seal has many looks from spring through fall: green leaves, white flowers, and bluish fruit. Learn more about it at HowStuffWorks.

Full Sun Perennials
Plant full sun perennials if your garden gets at least six hours of sunlight a day. Learn about the types of full sun perennials at HowStuffWorks.

Gaillardia, Blanket Flower
Gaillardia, or blanket flowers, are perennial daisies. They work in meadow gardens, garden borders and make nice cut flowers. Learn about them.

Garden Phlox
Garden phlox is an easy to grow perennial. These fragrant flowers make great border plants. Learn about the garden phlox.

Gas Plant, Burning Bush
Gas plant, also known as burning bush, is a perennial flower. Learn about growing, propagating, and using gas plant or burning bush.

Gaura
Gaura is a drought resistant perennial. Plant these delicate pink flowers and white flowers in a wild garden. Learn more about gaura.

Geranium, Crane's-Bill
Geraniums, or crane's-bill, are clump-forming perennials. Geraniums are great in rock gardens and as border plants. Learn about geraniums.

Globe Thistle
Globe thistles are perennials with blue blossoms, spiny-edged leaves, and round flower heads that make great specimen plants. Grow globe thistle.

Globeflower
Globeflower is a type of perennial flower. Learn about growing, propagating, and using globeflower.

Goat's Beard, Wild Spirea
Goat's beard, or wild spirea, is a perennial that blooms in autumn, producing plumes of tiny white flowers. Learn more about this easy-to-grow plant.

Golden Alexanders
Golden Alexanders are splendid additions to a woodland garden or a meadow full of prairie wildflowers. Learn to care for these native perennials.

Golden Aster
Golden aster is a type of perennial flower. Learn about growing, propagating, and using golden aster.

Golden Lace, Scabious Patrinia
Golden lace, or scabious patrinia, is an underused but versatile perennial. Learn how to mix its yellow flowers with other plants at HowStuffWorks.

Golden Marguerite
The golden marguerite is a daisylike perennial that comes out in full bloom from May to July. Read more about this lovely flower at HowStuffWorks.

Goldenrod
Goldenrod is a type of perennial flower. Learn about growing, propagating, and using goldenrod.

Goldenstar
Goldenstar is a type of perennial flower. Learn about growing, propagating, and using goldenstar.

Gooseneck Loosestrife
Gooseneck loosestrife's flowers truly have the appearance of geese ready to stretch their necks and honk. Learn more about this perennial flower.

Goutweed, Bishops Weed
Goutweed may be considered a bit of a nuisance, but it makes for solid ground cover and is easy to care for. Learn more about it at HowStuffWorks.

Grasses, Ornamental
Ornamental grasses grow through winter, as they're drought tolerant plants. These perennials have feathery or plume flowers. Learn about grasses.

Hardy Ageratum, Mist Flower
Hardy ageratum, or mist flower, has clusters of blue flowers that make beautiful borders. Learn about this tall perennial flower at HowStuffWorks.

Helenium, Sneezeweed
Helenium, or sneezeweed, are also called swamp sunflowers. The perennial flowers in the fall with blooms on branched stems. Learn about helenium.

Hollyhock, Perennial
Hollyhocks are tall-growing plants that usually have a single, unbranched flowering stalk that bears dozens of flowers. Learn more at HowStuffWorks.

Hosta Decorata
Hosta decorata is a strong perennial that will survive a frosty winter. Find uses and preferences for hosta decorata in this article.

Hosta Fortunei
Hosta fortunei is just one of many different kinds of hostas. Read more about this species, which has beautiful variegated leaves.

Hosta Francee
Hosta 'Francee' is a quick-growing shade plant that has large heart-shaped leaves of green and cream-colored edges. Learn about this perennial.

Hosta Sieboldiana
Hosta sieboldiana is not fond of the sun; however, in the shade it will produce wonderful blue-gray leaves and lilac flowers. Learn more about it.

Hosta Sieboldii
Hosta sieboldii has narrow leaves with irregular edges. Besides being a great garden plant, it carries decorative pods. Read more about it.

Hosta Tardiflora
Hosta tardiflora grows slowly, unlike most other hostas. It does gain in size over time but will not spread much. Learn about this hosta.

Hosta Ventricosa
Hosta ventricosa usually comes true from seed. It has heart-shaped leaves that may be solid or variegated. Find out about this garden perennial.

Hosta, Plantain Lily
Hosta, or plantain lily, is good for perennial and shade gardens. Lilylike flowers and basal leaves make hostas good potted plants. Learn about hosta.

Houttuynia
Houttuynia's red stems and blue-green leaves resemble English Ivy. The plant smells of oranges when bruised. Learn more at HowStuffWorks.

Hyssop, Anise Hyssop
Hyssop, anise hyssop, is fragrant with a scent like licorice. It is quite showy, somewhat tender, and enjoys hot summers. Learn more at HowStuffWorks.

Inula
Inula's yellow daisies are perfect for the front of a bed or border and grow to 16 inches, blooming in July and August. Learn more at HowStuffWorks.

Iris
Iris is a perennial cultivar. Its basal leaves and flower bulbs are perfect in flower gardens. Japanese iris is a related species. Learn about iris.

Italian Bugloss
Italian buglosses bloom brilliant true blue in June. They thrive in full sun or partial shade. Learn more at HowStuffWorks.

Japanese Primrose
Japanese primrose is a type of perennial flower. Learn about growing, propagating, and using Japanese primrose.

Jupiter's Beard, Red Valerian
Jupiter's beard, or red valerian, has fragrant scarlet to red flowers in dense clusters. Learn about this easy-to-care-for perennial at HowStuffWorks.

Knapweed
Knapweed has large leaves and thistlelike flowers. They bloom in the full sun of June through August. Learn more at HowStuffWorks.

Knotweed, Himalaya Fleece Flower
Knotweed's dark green leaves and tiny bright rose flowers are good as ground cover or as a border's edge. Learn more at HowStuffWorks.

Lady's Mantle
Lady's mantles are easy to grow perennials. Their lobed leaves and unusual chartreuse flowers make them good for bouquets. Learn about lady's mantles.

Ladybells
Ladybells have spires of dark blue, bell-shaped flowers that bloom in mid- to late summer. Learn how to grow this beautiful flower at HowStuffWorks.

Lamb's-Ears, Lamb's-Tongue
Lamb's-ears have pink to purple flowers. They require full sun and well-drained soil and make good edging and borders. Learn more at HowStuffWorks.

Lavender
Lavender is an aromatic herb. Known for lavender flowers and scented lavender oil, this perennial has purple flowers. Learn about lavender.

Leadwort, Plumbago
Leadwort, or plumbago, has beautiful foliage well into winter and bears blue flowers until the onset of frost. Learn more about it at HowStuffWorks.

Lenten Rose, Hellebore
Lenten rose, or hellebore, blooms as early as late winter. It is related to hosta and makes for great ground cover. Learn more at HowStuffWorks.

Leopard's-bane
Leopard's-bane flowers bloom in the spring and are bright yellow and daisylike. They make for good border plants. Learn more at HowStuffWorks.

Liatris, Blazingstar, Gayfeather
Liatris, or blazingstars or gayfeathers, are perennials. Fluffy florets and tall spikes are unusual and valuable cut flowers. Learn about liatris.

Ligularia
Ligularias are perennials bear sprays or spires of yellow flowers. Flower petals also come as orange flowers. Learn about ligularia.

Mallow
Mallow's bushy soft green leaves mix beautifully with ornamental grasses and are most effective when planted mid-border. Learn more at HowStuffWorks.

Mayapple
Mayapple is great perennial for a woodland setting and a wonderful three-season plant. Find out more about this American native and its needs.

Meadow Rue
Meadow rue has rosy purple, petal-less flowers that resemble balls of fluff, and bloom in May and June. Learn more at HowStuffWorks.

Meadowsweet, Queen-of-the-Prairie
Meadowsweet looks like a ball of cotton candy. Easy to care for, these perennials contrast well on a dark background. Learn more at HowStuffWorks.

Merrybells
Merrybells are tall perennials whose dainty bell-shaped flowers start blossoming in spring. Learn about this hardy and graceful woodland plant.

Monkshood
Monkshood is an extremely poisonous plant, whose flowers resemble those of delphinium. Learn how to care for it at HowStuffWorks.

Moss Phlox
Moss phlox is great in a rock garden or as ground cover. It has 5-petaled flowers in hues of blue and pink. Learn more about it at HowStuffWorks.

Multicolor Perennial Flowers
Multicolor perennial flowers blossom every year in many different colors. Learn how multicolor perennials can enhance your garden at HowStuffWorks.

Musa
The popular musa, or banana plant, is neither a tree nor a palm but a perennial. Read about this green giant and how to care for it.

Northern Sea Oats
Northern sea oats is a 3-foot tall perennial that is reminiscent of bamboo. Find a photo and learn about this plant's preferred growing conditions.

Ornamental Onion
Ornamental onion has pretty rounded flowers in pink, white, mauve, and green, and often has a pungent odor when crushed. Learn more at HowStuffWorks.

Ornamental Strawberry, Alpine Strawberry
Ornamental strawberry, or Alpine strawberry, has rose-red flowers and small fruits. It's great ground cover that you can learn about at HowStuffWorks.

Ox-Eye, False Sunflower
Ox-eyes are called false sunflowers for their similar appearance. The bright yellow daisies bloom over a long period. Learn more at HowStuffWorks.

Pachysandra, Japanese Spurge
Pachysandra, Japanese spurge bears small greenish-white flowers and has leaves that yellow in full sun. Learn more at HowStuffWorks.

Pearly Everlasting
Pearly everlastings are wildflowers with green and gray leaves and white flowers that bloom in the summer. Learn more at HowStuffWorks.

Peony
Peonies are showy flowers. These perennials are great specimen plants and work in cutting gardens. They bloom huge flowers. Learn about showy peony.

Perennial Baby's Breath
Baby's breath is a type of perennial flower. Learn about growing, propagating, and using baby's breath at HowStuffWorks.

Perennial Beard Tongue
Beard tongue is a type of perennial flower. Learn about growing, propagating, and using beard tongue at HowStuffWorks.

Perennial Bulbs
Perennial bulbs come in three major categories: true bulbs, corms, and tubers. Find out about perennial bulbs, spring planting, and sowing methods.

Perennial Flowers
Perennial flowers return to bloom each year. Learn the different types of perennials, and which ones are right for you.

Perennial Grasses and Foliage
Perennial grasses and foliage can add interest to your garden. Learn which perennial grasses and foliage to plant in your yard at HowStuffWorks.

Perennial Herbs
Herbs are useful for cooking, crafting, and decorating. Learn about growing perennial herbs such as lavender and rosemary at HowStuffWorks.

Perennial Lupine
Perennial lupines have attractive gray-green leaves, and blossom multiple times per year with water and full sun. Learn more at HowStuffWorks.

Perennial Pea, Sweet Pea
Perennial pea vines are light green and bear sweet pealike flowers of pink, bluish-red, or white in August. Learn more at HowStuffWorks.

Perennial Plants
Perennial plants are an essential part of planning a garden. Learn about these plants that bloom year after year.

Perennial Sunflower
Perennial sunflowers have yellow, daisylike flowers. They are easy to care for and will grow tall in good soil. Learn more at HowStuff Works.

Perennials
Perennials are distinct from annuals in that they return year after year. Learn about perennials, spring planting, and garden care.

Perennials 12-24 Inches
You can have an attractive garden that only grows to shrub height. Read about perennials 12-24 inches high.

Perennials for Average Soil
Growing perennials for average soil gives gardeners many options. We'll show you which perennial flowers are perfect for gardening with average soil.

Perennials for Full Shade
Perennials for full shade are best in a garden that doesn't get a lot of light. Learn about gardening with these perennial flowers at HowStuffWorks.

Perennials for Moist Soil
Plant perennials for moist soil if your soil is wetter than average. Learn which perennial flowers to plant when gardening at HowStuffWorks.

Perennials for Part Shade
Plant perennials for part shade in a garden with a mix of sunlight. Learn which perennial flowers are best for part shade only at HowStuffWorks.

Perennials Over 24 Inches
Tall garden flowers lend a sense of dimension to the home garden. Learn about perennial flowers over 24 inches, and where they fit in your garden.

Perennials Under 12 Inches
Perennials under 12 inches are great for gardening in the front of your yard. Learn which perennial flowers are best for planting at HowStuffWorks.

Periwinkle, Myrtle
Periwinkle is easy to care for and grow in full sun to partial shade. Its blue flowers bloom early in spring. Learn more at HowStuffWorks.

Persian Violet
Persian violet is a temporary house plant that will bloom with little effort for at least three to four months. Learn about it at HowStuffWorks.

Physostegia, Obedient Plant
Physostegia, or obedient plant, is a perennial flower great for flower bouquets, potted plants, cut flowers, or in flower borders. Learn more.

Pincushion Flower
Pincushion flowers grow well in full sun and bloom butterfly blue in the spring. They are excellent as cut flowers. Learn more at HowStuffWorks.

Pink to Fuchsia Perennial Flowers
Pink to fuchsia perennial flowers provide a soft touch in the garden. Discover the right pink to fuchsia perennial flowers for your yard.

Plume Poppy
Plume poppies white flowers and large leaves make them great along borders where they can flow in the breeze. Learn more at HowStuffWorks.

Poppy
Poppy flower varieties include oriental poppies, champagne bubbles, and the iceland poppy. Find out more about this perennial flower.

Prairie Coneflower
Prairie coneflower is also known as Mexican hat. It is a tall wildflower that will help attract butterflies to the garden. Read more about it.

Primrose
Primrose is a colorful perennial. See its red, yellow, purple and orange flowers in streamside gardens. Use primrose as a house plant.

Pulmonaria, Lungwort
Pulmonaria, or lungworts, are perennials that grow in difficult sites, great in a shade garden, wild garden, or as ground covers. Learn of lungworts.

Red Perennial Flowers
Red flowers add an instant blaze of color to the most sedate garden. Learn how to use red perennial flowers in your garden at HowStuffWorks.

Rock Cress
Rock cress has tufted rosettes of oval leaves covered with white down, and is great for a rock or wall garden. Learn more at HowStuffWorks.

Rockcress
Rockcresses are trailing perennials with 4-petaled flowers in blue to purple shades and evergreen leaves. Learn more about rockcress at HowStuffWorks.

Rodgersia
Rodgersias have large compound leaves tinted with bronze. They have small 5-petaled white flowers that appear in July. Learn more at HowStuffWorks.

Rose Campion
Rose campion is a beautiful, tall, and colorful garden classic that oozes nostalgic charm. Learn about this plant, its history, and its uses.

Rose Geranium
Rose geraniums are beautiful floral perennials that have lovely scents ranging from floral to spicy. Learn how to make them thrive in your garden.

Rose Mallow, Swamp Mallow
Rose mallows are fine wild garden flowers that bloom pink, purple, or white most of the summer. Learn more at HowStuffWorks.

Rudbeckia
Rudbeckia is a relative of the black-eyed Susan. Like its cousin, this perennial is the perfect country garden plant. Learn about rudbeckia.

Salvia, Meadow Sage
Salvias, or meadow sages, are perennials grown in flowerbeds. Sage is used in cooking. Learn about the salvia species.

Santolina
Santolina has bright yellow flowers in summer atop its aromatic foliage of needlelike leaves. Learn about this lovely sun-loving plant.

Sea Holly
Sea hollies bloom in July and August and make excellent cut flowers as well as additions to wild gardens. Learn more at HowStuffWorks.

Sea Lavender
Sea lavender creates clouds of tiny lavender-blue flowers. They are great for beds and borders in summer bloom. Learn more at HowStuffWorks.

Self-heal
Self-heals resemble snapdragons blooming in the summer and make good ground cover in shady areas. Learn more at HowStuffWorks.

Siberian Iris
The Siberian iris is an attractive perennial that comes in a variety of blues, which makes it perfect for a color-themed garden. Read more about it.

Soapweed
Soapweeds are evergreens with spectacular greenish-white flowers. The flower buds can be substituted for soap. Learn more at HowStuffWorks.

Soapwort, Bouncing Bet
Soapwort is a pretty perennial flower that bears fragrant 5-petaled white or pink blossoms. Learn how easy it is to care for at HowStuffWorks.

Spiderwort
Spiderworts are weak-stemmed plants with 3-petaled flowers. Plant spiderwort in shade or indoors as a house plant. Learn more at HowStuffWorks.

Stoke's Aster
Stoke's aster has fluffy blue 2- to 5-inch lavender flowers that make decorative fronts for a bed or border. Learn more at HowStuffWorks.

Sundrop, Evening Primrose
Sundrops (evening primrose) get their names from the bright yellow flower petals that look like molten gold. Learn more at HowStuffWorks.

Sunflower Heliopsis, False Sunflower
Sunflower heliopsis, false sunflower, is an American native. It grows tall and bears large yellow or orange flowers. Learn more at HowStuffWorks.

Sweet Rocket
Sweet rocket, or dame's violet, bears fragrant lilac flowers, whose scent is stronger at night than by day. Learn about caring for sweet rocket.

Thrift, Sea Pink
Thrifts, sea pinks, are great for rock, seaside, or wall gardens. They have evergreen, grasslike leaves and pink flowers. Learn more at HowStuffWorks.

Thyme
Thyme comes in hundreds of species and can be used as an edging plant, in pockets of stone walls, and in containers. Learn more at HowStuffWorks.

Toad Lily
Toad lilies have beautiful cream and purple flowers that bloom in fall. They are great for the shady garden. Learn more at HowStuffWorks.

Tufted Hairgrass
Tufted hairgrass is an ornamental grass that remains green all year round. Learn about its usages and care instructions in this article.

Veronica, Speedwell
Veronica, or speedwell, is a roadside plant with pretty flowers. The perennial plant is good in rock gardens and as cut flowers. Learn about veronica.

Virginia Bluebells
Virginia bluebells grow 2 feet tall and form dense colonies in the early spring. They are good naturals in wooded areas. Learn more at HowStuffWorks.

White to Green Perennial Flowers
White to green perennial flowers blend in naturally with foliage, and provide an airy look. Learn which of these hardy blossoms is right for you.

Winter Jasmine
Winter jasmine is as pretty and fragrant as regular jasmine, but it blossoms in winter. Learn how to grow this perennial vine at home.

Yarrow
Yarrow is a perennial flower that's good for the garden border, mass plantings or as cut flowers. Learn about these wildflowers.

Yellow Coneflower, Perennial Black-Eyed Susan
Yellow coneflower, or black-eyed-Susan, is an American wildflower blooming from summer to fall. Learn more at HowStuffWorks.

Yellow Foxglove
Yellow foxglove stands in bloom in summer with bell-like flowers. It is an easy-to-care-for garden perennial. Learn more at HowStuffWorks.

Yellow Ginger Lily
Yellow ginger lily is a fragrant tropical perennial that blooms in late summer. Read about this striking plant and how to care for it.

Yellow to Orange Perennial Flowers
Yellow to orange perennial flowers are a bright and cheery addition to any garden. Learn whether yellow to orange perennial flowers are right for you.

How to Grow Perennials
Perennials, unlike annuals and biennials, stay in your garden year after year. Learn how to design and care for a perennials garden at HowStuffWorks.

Planting a Garden
Planting a garden is just the start of a season of growth -- take time to do it right. Learn all you need to know about planting a garden at HowStuffWorks.

Tips for Growing Perennials
Perennials return year after year with splendid blossoms and foliage. Check out this article for tips on planting, growing and caring for perennials.