Plant Encyclopedia
Search and identify 1,000+ plants, flowers, trees, and succulents — with care, light, water, and how to tell them apart.
Canada Thistle
Canada thistle is an aggressive perennial weed with spiny leaves and small pink-purple flower heads that spreads relentlessly through deep, creeping roots. Despite its name it is native to Europe and Asia, and it is one of the most difficult agricultural weeds to control.
herb
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
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
Sow Thistle
A leafy annual resembling a soft thistle, with milky sap, lobed prickle-edged leaves and small dandelion-like yellow flowers. It is a widespread garden and field weed.
herb
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
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
Canadian Hemlock
Canadian Hemlock is a graceful, shade-tolerant evergreen conifer with soft, feathery foliage and drooping branch tips. It is widely used for hedges and woodland gardens in cool climates.
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
Thimble Cactus
A tiny clustering cactus that produces masses of little thimble-sized offsets which detach at the slightest touch. The pale spines give the cluster a soft, frosty look.
succulent
Balsam Fir
A fragrant northern evergreen with flat, soft needles and resin-blistered bark, beloved as a Christmas tree for its classic spire shape and lasting pine scent.
tree
Horseweed
Horseweed is a tall, weedy native annual with a single bristly stalk topped by clouds of tiny flowers; it is a prolific seeder and one of the first weeds to evolve widespread herbicide resistance.
herb
Catnip
Catnip is a hardy, easy-growing mint-family herb famous for the response it triggers in many cats. It is also a useful pollinator and pest-repelling plant.
herb
Wild Onion
A native North American perennial onion with flat, grass-like leaves and bulbs that emit a clear onion scent. It commonly appears in lawns, meadows and woodland edges and is regarded as both a wildflower and a lawn weed.
herb
Pumpkin
Pumpkin is a sprawling warm-season vine in the gourd family, grown for its large, ribbed orange fruits popular in autumn displays and decoration. It is one of the easiest and most rewarding garden crops where space allows.
herb
Canary Creeper
Canary creeper is a delicate climbing relative of the nasturtium, named for its fringed, bright yellow flowers that resemble tiny birds in flight. It quickly clothes trellises and fences with lacy blue-green foliage.
flower
Wild Garlic
A pungent perennial bulb in the onion family that spreads aggressively through lawns and fields, recognized by its hollow, grass-like leaves and strong garlic odor. It is a common turf weed.
herb
Poppy
The poppy is a delicate-petaled wildflower, most iconic in its scarlet form, that blooms in sunny meadows and has become a symbol of remembrance.
flower
Eastern Hemlock
Eastern hemlock is a graceful, shade-tolerant evergreen conifer of cool eastern forests, with soft flat needles and tiny cones; it is threatened across its range by the invasive hemlock woolly adelgid.
tree
Wild Mustard
Wild mustard, or charlock, is a fast-growing annual weed of fields and roadsides with bright yellow four-petaled flowers. It is an aggressive crop weed.
herb
Shirley Poppy
The Shirley poppy is a refined garden strain of the wild corn poppy, bred for its delicate, papery flowers in soft pinks, whites, reds, and bicolors. These cool-season annuals self-sow freely for drifts of tissue-thin blooms.
flower
Wild Ginger
A low, spreading woodland groundcover with heart-shaped leaves and curious maroon flowers hidden at soil level. Its ginger-scented roots inspired the common name, though it is unrelated to true ginger.
flower
Canna Lily
Canna lily is a bold tropical perennial grown for its large paddle-shaped leaves and vivid flower spikes. Despite the name it's not a true lily, and its rhizomes are lifted in cold climates.
flower
Corn Poppy
An annual wildflower famed for its papery, blood-red blooms that carpet European fields and serve as the international symbol of wartime remembrance.
flower
Wild Columbine
Wild columbine is a graceful native woodland wildflower with nodding red-and-yellow flowers whose backward-pointing spurs hold nectar prized by hummingbirds.
flower