Plant Encyclopedia
Search and identify 1,000+ plants, flowers, trees, and succulents — with care, light, water, and how to tell them apart.
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
Lettuce
Lettuce is a fast-growing leafy annual in the daisy family, a cool-season garden staple. It comes in loose-leaf, romaine, butterhead, and crisphead types.
herb
Prickly Pear Cactus
Prickly pear cacti have flat, paddle-shaped pads and produce showy flowers followed by colorful fruit. Tough and drought-hardy, several species are widely grown for landscaping.
succulent
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
Elephant Ear Cactus
A prickly pear with flat, rounded green pads that branch into ear-like shapes. Instead of long spines it bears dense tufts of tiny barbed glochids that detach at the lightest touch.
succulent
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
Lodgepole Pine
Lodgepole Pine is a slender, adaptable western North American pine with paired needles and small prickly cones. Many populations have serotinous cones that open only after fire.
tree
Bunny Ear Cactus
The bunny ear cactus is a charming Mexican prickly pear whose flat, paddle-shaped pads grow in pairs resembling rabbit ears, dotted with tufts of fine golden glochids instead of long spines.
succulent
Bishop Pine
Bishop Pine is a hardy two-needle pine of the California and Baja coast, with persistent, prickly cones that often stay closed on the tree for years until fire opens them. It tolerates wind, salt, and poor soils.
tree
Teasel
Teasel is a tall, spiny biennial topped with egg-shaped, prickly flower heads ringed by tiny lavender blooms. Once used to raise the nap on woolen cloth, it is now considered an invasive weed in much of North America.
herb