Common yarrow is a wildflower that has feathery leaves and flowers in white, yellow or pink. In China, the plant is considered to be good luck while for some time in Scotland it was believed to have magical properties. It has been brewed into beer, tea, and liquors, but it has low toxicity. Do not consume in large quantities. Common yarrow's bitter leaves are toxic to pets and horses. Other livestock can eat it, though it gives cow milk an unpleasant flavor.

Betony is a perennial flowering herb native to parts of Europe, Africa, and Asia. A purple-flowered member of the mint family, betony was often addressed in ancient folklore. The plant was thought to ward off sorcery, goblins, and even nightmares. Churches commonly added it to their gardens, in an attempt to keep ghosts away.

Ribwort plantain grows in a number of different habitats as long as it has enough sunlight. Its leaves have characteristic parallel veins that make it easy to identify. The heads of ribwort plantains get popped off in some common British children's games. Its seeds are critical food sources for songbirds, and its leaves are eaten by rabbits and deer.

Dropwort is an easy-to-grow member of the rose family. Its common name refers to the tubers that hang from its roots like drops of water. It grows easily in full sun to partial shade.

Brown knapweed (Centaurea jacea) is a perennial flowering plant that grows in woodland clearings, yards, ditches, and pastures. Brown knapweed is native to Europe. This plant is categorized as an invasive species in most places where it grows.

Sickle medick (Medicago falcata) is planted for soil improvement since it improves nitrogen content. The secret to its success is that it has a symbiotic relationship with a bacterium called Sinorhizobium meliloti, which actually does the work of fixing nitrogen. You can spot this widespread plant by its bright yellow flowers, growing in fields and disturbed lands.

Orchard grass (Dactylis glomerata) is native to Eurasia and was introduced to North America around the 18th century as a forage grass. Now it is widely naturalized in the U.S., Australia, and New Zealand. It is also called "cat grass" because our feline friends love to chew on it.

Common bird's-foot trefoil (Lotus corniculatus) is a common flowering perennial plant that grows widely throughout Europe and North America. Commercially, it is often added to livestock feed to prevent bloating. In Britain, common bird's-foot trefoil is often referred to as "butter and eggs" due to its flowering appearance and golden color. It attracts bumblebees and is considered an invasive species in North America and Australia.

Chinese hibiscus is a small flowering tree. Its fragrant flowers are well known the world over, leading to many cultivated variants. Chinese hibiscus is the national flower of Malaysia and is featured on Malaysian coins. Although the Latin name, Hibiscus rosa-sinensis, means “the rose of China,” it is not related to true roses.

Leucanthemum vulgare is a very adaptable perennial herb native to Eurasia, commonly known as oxeye daisy. It is widely cultivated as an ornamental plant. Oxeye daisy is a common weed in lawns and crop plants. It is also considered an invasive species in some areas in the world.

Weeping fig (Ficus benjamina) is an evergreen tree native to Asia and Australia. It is one of the most popular houseplants in the world, known for its elegant, glossy leaves. However, people with allergies should avoid weeping fig, considering that it is a major source of indoor allergens. All parts of the plant are poisonous except the fruits.

The cypress spurge is an ornamental plant native to Europe. Because of its strong tendency to overrun the habitats of other species, this plant is classified as a noxious weed in various states, including Colorado. Although this plant attracts bees and other pollinators, some sections of it are hazardous and contain irritants.

Field eryngo (Eryngium campestre) is native to Europe, North Africa, and Afghanistan, usually preferring to grow in dry coastal areas. It is a popular addition to arid gardens or as a dried flower. Field eryngo oils contain saponins and tannins which help keep some animals from eating it.

Rubber tree (Ficus elastica) is a large tree with wide, oval, glossy leaves. Its milky white latex was used for making rubber before Pará rubber tree came into use, hence the name. Rubber tree is an ornamental species, often grown as a houseplant in cooler climates.

The lemon thyme (Thymus pulegioides) is widely distributed across Europe and northeastern North America. This small, bush-forming Thymus pulegioides is distinguished by its pleasant lemony smell. It can be found in meadows, sunny hillsides, rocky terrain, and along roads, and it is often cultivated in rock gardens. The lemon thyme is a well-known aromatic herb used for making flavored tea.

Looking like a miniature fairy tale tree, jade plant is one of the world's most popular succulents. Native to southern regions of Africa, Crassula ovata is well adapted to the dry warm air of modern homes. It grows slowly but lives for so long that plants get passed from generation to generation. It is toxic to dogs, cats, and horses, and even mildly toxic to humans.

Florist kalanchoe (Kalanchoe blossfeldiana) originates from Madagascar and has been a popular houseplant since the 1930s. Unlike most other succulents that are grown for their interesting leaves, Kalanchoe blossfeldiana is valued for the colorful flowerheads it produces in autumn and winter. This is the reason it is commonly gifted during holidays, earning it another name - Christmas kalanchoe. It is toxic to pets.

Common agrimony (Agrimonia eupatoria) is a dark green deciduous perennial covered in soft hairs. In British folklore, it was thought that placing a piece of this plant under a person's pillow would cause them to sleep until the plant was removed.

Hoary plantain is a member of the plantain family, but should not be confused with the banana-like, starchy fruit which is from a different family altogether. The flowers are pollinated by both bees and the wind. Birds are fond of the seeds, and hoary plantain seeds are even included in some commercial birdseed mixes.

The zanzibar gem is a flowering green plant native to eastern Africa. It also gets the name emerald palm because of its bright, glossy color. Today, the zanzibar gem (Zamioculcas zamiifolia) is grown around the world as a houseplant, in part because it is easy to grow and care for. Though this plant is mildly toxic if ingested, its danger level is often overstated.