Field horsetail (Equisetum arvense) grows from moist soils. In the spring it generates brown, non-photosynthetic stems whose whole purpose is to release reproductive spores. Once those stems wither, the plant grows its sterile photosynthetic stem to harvest and store energy for the next growing season. The plant fibers are slightly abrasive, and in the past were used to polish pewter and wooden objects. Ironically, field horsetail is toxic to horses and other livestock.

Copperleaf (Acalypha wilkesiana) is an evergreen shrub native to the Pacific Islands. Copperleaf is a popular outdoor plant used for ornamental cultivation due to its brightly colored leaves. It is particularly popular in Florida in the United States.

This tropical, evergreen shrub grows erect and blooms with bold dark blue or purple flowers through both summer and autumn, making it a lovely choice for hedges, borders, and walls. Though bush clockvine most commonly grows as a bush, it can be 'trained' to grow like a vine (as implied by the name).

Devil's-backbone (Euphorbia tithymaloides) is a succulent species of spurge native to North and Central America. It has been planted in gardens since the 17th century and valued for its unique appearance and its habit of attracting hummingbirds. However, nearly all parts of this species are toxic and should not be consumed.

An important subsistence crop, pearl millet is hardy and drought-tolerant. Also known as Cenchrus americanus, it grows well near deserts where the rainfall is low. It has been cultivated in the United States since the 1850s and there are records of this important crop being grown since 2000 B.C.

Rosemary is a herb with pale flowers and evergreen leaves. It gives off a distinctive scent and is used in cooking as well as in the making of scented perfumes, soaps, and candles. Rosemary is native to the Mediterranean region where evidence of its use by humans dates back at least 7000 years.

Madagascar screw palm is said to have obtained its common name from the spiraling formation of its leaves and the resemblance its fruit has to pine cones. Madagascar screw palm has been introduced to many areas as an ornamental, with little evidence of negative environmental impact. Its leaves are sometimes used to make mats and baskets.

Canyon ragweed is a member of the sunflower family, although it looks nothing like a traditional sunflower. This plant blooms in early spring and is followed by a fruit that resembles a prickly burr.

Ficus carica, colloquially known as the common fig, is a deciduous small tree or shrub widely known for its sweet, chewy fruits. This shrubby plant has a very, very long cultivation history. The earliest evidence of its cultivation was found in the Jordan Valley and go all the way back to the tenth millennium BC.

Celandine poppy (Stylophorum diphyllum) is an herbaceous perennial plant native to North America and also known as the woods-poppy. This species is considered endangered in Canada. It grows in the eastern United States and eastern Canada.

The apple-ring acacia (Faidherbia albida) is a thorny tree from Africa and the Middle East. A versatile species, it can grow in dry floodplains, swamps, riverbanks, and across savannahs. The ring-shaped seed pods are favorites of livestock and wildlife alike. The apple-ring acacia's wood is used as firewood and to make canoes, and soap can be made from the ashes.

Olive (Olea europaea) is an evergreen tree or shrub with great agricultural importance, especially in the Mediterranean. Its fruits are edible and widely used for making oil. Olive has acquired quite a few symbolic meanings during its long history of cultivation. The most popular symbol would probably be the olive branch, which represents peace and glory.

The bigleaf hydrangea is a deciduous shrub native to Japan, and is known for its lush, oval, colorful inflorescence. The two types of Hydrangea macrophylla are mopheads - with large, ball-shaped, sterile flower clusters, and lace capes - with small round fertile flowers in the center, and sterile flowers on the outer side of each inflorescence. Depending on soil pH, blooms can change color from pink to blue.

Red frangipani (Plumeria rubra) is a deciduous shrub or small tree native to Central and South America. It is widely cultivated as an ornamental plant in tropical and subtropical climates. All parts of the plant are toxic when ingested due to their high alkaloid content.

Sensitive fern (Onoclea sensibilis) is a deciduous perennial fern native to Russia, Asia, and North America. Sensitive fern is also called a bead fern. It is widely used in ornamental cultivation and in landscaping restoration. When growing this fern, in shade it can grow in drier soil but in sunlight it requires wet soil.

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.

Silky dogwood (*Cornus amomum*) is a deciduous shrub native to eastern North America. Underneath the leaves and twigs, you’ll find silky hairs—hence the name. Native Americans referred to it as 'kinnikinnick,' which means 'smoking mixture,' because they smoked it like tobacco. White flowers bloom forth in the spring. They are followed by blue fruit that birds love to snack on.

Bear's paw is a succulent evergreen shrub endemic to South Africa with thick, fuzzy leaves with noticeable "teeth" at their tips. During the spring, it blooms with huge orange bell-shaped flowers. The leaf of this plant turns a deep red when disturbed or agitated externally. Bear's paw is toxic to animals, pets, and people.

Blue porterweed is native to the Caribbean and considered an invasive species in many areas outside.

Salvia officinalis, colloquially known as common sage, is an evergreen woody shrub that grows in dry and stony places. It has a long history of cultivation for culinary purposes as well as for its distinctive scent, which is now incorporated into candles, potpourri, and beauty products, often combined with lemon. Common sage's lovely purple flowers adorn many gardens and flower beds all over the world.