Plant Encyclopedia
Search and identify 1,000+ plants, flowers, trees, and succulents — with care, light, water, and how to tell them apart.
Amaranth
Amaranth is a vigorous annual grown for its dramatic drooping crimson flower tassels and broad, often red-tinged leaves. It has been cultivated for thousands of years across the Americas, Asia, and Africa.
herb
Globe Amaranth
A heat-loving annual grown for its round, clover-like flower heads of papery bracts in magenta, purple, pink, white or orange. The everlasting blooms keep their color when dried and stand up beautifully to summer heat and humidity.
flower
Pigweed
Pigweed is a vigorous annual weed of the amaranth family with reddish roots and dense seed clusters, and a major agricultural pest.
herb
Love-Lies-Bleeding
A dramatic annual amaranth grown for its long, ropelike crimson flower tassels that drape downward in bold cascades.
flower
Bull Thistle
Bull thistle is a spiny biennial weed with sharp, prickly leaves and large rose-purple flower heads that is both a pasture nuisance and a pollinator magnet.
flower
Coneflower
A rugged North American prairie perennial with daisy-like purple-pink petals around a spiny, copper-orange central cone. Beloved by pollinators and goldfinches.
flower
Castor Bean
Castor bean is a fast-growing, dramatic plant with huge tropical leaves and spiny seed pods, often used as a bold ornamental for an instant tropical effect in gardens.
shrub
Globe Thistle
Globe thistle is a bold, architectural perennial topped with spherical, steel-blue flower heads above spiny, gray-green foliage. It is drought-tolerant and irresistible to bees.
flower
Gooseberry
A thorny deciduous shrub in the currant family that produces translucent berries on arching, spiny stems. It is hardy, productive and tolerant of cool climates.
shrub
Rat Tail Cactus
A trailing epiphytic cactus with long, slender, spiny stems that hang like rat tails and burst into vivid pink-magenta flowers in spring. It is a spectacular choice for hanging baskets.
succulent
American Holly
American Holly is a slow-growing evergreen tree of the eastern United States, prized for its spiny leathery leaves and bright red winter berries. It is a classic source of holiday greenery.
tree
Prickly Lettuce
Prickly lettuce is a tall annual or biennial weed and the closest wild relative of cultivated lettuce. It is recognized by spiny leaf midribs, milky sap, and leaves that twist to align vertically like a compass.
herb
Ohio Buckeye
A medium native tree with palmate compound leaves, spiny husks holding glossy brown 'buckeye' seeds, and foliage that smells unpleasant when crushed.
tree
Jimsonweed
Jimsonweed is a rank-smelling nightshade with large white-to-purple trumpet flowers and spiny seed pods, and one of the most distinctive weeds of North America.
herb
Purple Coneflower
Purple coneflower is a tough, long-blooming prairie perennial with daisy-like pink-purple flowers and a raised, spiny orange center that draws butterflies and bees.
flower
Madagascar Palm
The Madagascar palm is a spiny, succulent caudex plant with a thick, spine-covered trunk topped by a crown of strappy leaves. Despite its name and look, it is not a true palm but a relative of the desert rose.
succulent
Natal Plum
Natal plum is a glossy, spiny evergreen shrub from South Africa with fragrant white flowers and red plum-like fruit. It is a tough, salt-tolerant choice for warm-climate hedges and coastal gardens.
shrub
Musk Thistle
Musk thistle is a spiny biennial weed with large, nodding rose-purple flower heads; native to Eurasia, it is an aggressive invader of pastures and rangelands across North America.
flower
Coulter Pine
A rugged southern California and Baja conifer famous for producing the heaviest pine cones in the world, sometimes weighing up to 5 pounds. Its stout, spiny cones and long blue-green needles make it unmistakable.
tree
Puncturevine
Puncturevine is a low, mat-forming summer weed notorious for its hard, spiny seed burs that puncture bicycle tires and bare feet. It thrives in hot, dry, disturbed ground and is widespread in warm regions worldwide.
herb
Rattlesnake Master
A distinctive prairie perennial with yucca-like, spiny-edged leaves and greenish-white, golf-ball-shaped flower heads. Despite its name, it is a member of the carrot family.
flower
Milk Thistle
Milk thistle is a striking, spiny thistle with glossy white-marbled leaves and large purple flower heads. Robust and self-seeding, it can become a weed in warm climates.
herb
Soursop
Soursop is a tropical evergreen tree in the custard apple family, bearing large, spiny, dark green heart-shaped fruit. It is sensitive to cold and demands a warm, frost-free climate.
tree
Oregon Grape
Oregon grape is a hardy evergreen shrub with spiny, holly-like leaves, bright yellow spring flowers and clusters of blue berries. It is the state flower of Oregon and a tough plant for shade.
shrub