The pepper are commonly used for cooking in places such as the Southern U.S. and Central America. Most are moderately spicy, though because there are so many variants, the spice level can vary dramatically. Cayenne powder is also a popular seasoning product made from pepper plants.

Common bean is one of the most widely produced cash crops in the world, with 23.6 million tons grown in 2016. China is the largest producer of common bean, accounting for 79% of the market share. While common bean is known as a staple food source, the leaves can be used to trap bedbugs and the beans are widely used in a type of fortune-telling called "pharmancy".

The golden pothos (Epipremnum aureum) is a popular houseplant that is commonly seen in Australia, Asia, and the West Indies. It goes by many nicknames, including "devil's ivy", because it is so hard to kill and can even grow in low light conditions. Golden pothos has poisonous sap, so it should be kept away from pets and children.

Although the yellow trumpetbush have beautiful and bright flowers that can be pleasing to look at, this plant is considered an invasive weed in multiple countries. A native of the southern United States, Mexico, the Caribbean, Peru and Ecuador, this plant is often found on roadsides, riparian areas, disturbed sites, and other wasteland areas.

Tree cholla (Cylindropuntia imbricata) is a cactus tree that grows from 91 to 152 cm tall. Grows in full sun and requires well-drained soil. Tree cholla flower buds are edible and can be dried, boiled or roasted and eaten much like okra. Yellow fruits ripen in winter and can be eaten raw or cooked into preserves, like other berries.

Maize (Zea mays) is a well known domesticated cereal grain first domesticated in Mexico. In much of the world it is also called corn. Worldwide cultivation of maize surpasses other prominent grains like wheat and rice. Maize must be planted in the spring due to its intolerance for cold weather.

Aloe vera is an evergreen succulent species native to the Arabian Peninsula. The thick leaves are filled with gooey flesh that stores water for survival in its native desert territories. Aloe vera has become a popular houseplant and is also incorporated into a wide range of cosmetics and skin-care products.

Another name for turk's head (Ferocactus hamatacanthus) is the Mexican fruit cactus. You’ll mostly find this prickly species in the Chihuahuan Desert, next to the Rio Grande, and located in northern Mexico and the southwestern U.S. You can eat the fleshy fruits produced by the plant.

Snake plant can be considered a houseplant and an architectural display due to its sword-like leaves with bold striping patterns, which are distinctive and eye-catching. However, use caution with this plant because it is poisonous when ingested and can cause nausea, vomiting, and even swelling of the throat and tongue.

Portulaca oleracea, colloquially known as common purslane, is an annual succulent species with reddish stems and tiny yellow, five-petal flowers. It is used for culinary purposes in various parts of the world, most often raw, in salads. Common purslane is also a good companion plant for crops that thrive in moist soils.

Corn plant (Dracaena fragrans) is an evergreen, slow-growing perennial shrub native to tropical Africa. Also, it is a classic houseplant, grown in Europe since the 1800s. Its glossy green foliage that resembles corn leaves grow on top of a thick cane, which is why the plant is sometimes called “false palm tree.”

Tree tobacco (Nicotiana glauca) is a wild tobacco species native to South America. On other continents, tree tobacco is considered an invasive species. All parts of this plant are poisonous.

Arrowhead plant (Syngonium podophyllum) is a beautiful foliage plant, one of the most popular species of the Araceae family. Due to its air purifying qualities and good looks, arrowhead plant is often cultivated as a houseplant. Every part of this plant is toxic, so it's best to keep it away from kids and pets.

Silverleaf nightshade (Solanum elaeagnifolium) is a common weed that grows throughout North America, South America, and Africa. In South Africa, it is called "Satan's bush". Ingestion of silverleaf nightshade is thought to be toxic to horses.

Solanum lycopersicum is an annual or perennial herbaceous vine native to Central and South America that produces a large, juicy, edible fruit known as tomato. Today there are over 10000 cultivated varieties. Although tomato is the world’s most popular vegetable, botanically it is a fruit.

Glory of texas (Thelocactus bicolor) is a perennial flowering cactus found throughout the deserts of southern North America, particularly Texas and Mexico. It is commonly grown ornamentally and well-loved for its large, vibrant flower. Glory of texas requires warm, dry, sunny conditions to grow properly. In the wild, it most often grows individually, but may occasionally be seen in clumps.

Strawberry hedgehog cactus (Echinocereus stramineus) is a cactus found in northern Mexico and the southwestern United States. It grows in small clumps of round lobes, giving rise to its common name. It is quite resilient against cold temperatures but cannot survive overwatering. The distinctive, almost porcupine-like spines can grow up to 8 cm long!

Fendler's horse-nettle is not a true nettle, but a member of the wild potato and nightshade family. Among various Native American tribes, it was traditionally used for a variety of reasons -- as food, for healing rituals, and even as building materials. It was said that some would eat clay after every bite of fendler's horse-nettle because of the terrible taste. It is one of the two wild potato species ever found in the USA.

The common sunflower is recognizable for its bright flower on a very tall stem. It is often grown in gardens. These flowers have been important in culture: they were worshipped by the ancient Inca people, and today, they represent eco-friendly movements. The artist Vincent van Gogh made a famous series of paintings about common sunflower. Wild versions of the plant branch out to many flower heads, but domesticated plants typically only have one.

Tradescantia pallida is an evergreen perennial trailing plant, colloquially known as purple heart. This beautiful perennial is famous for its spectacular deep purple, pointed leaves. Purple heart is a common houseplant, but it is also often used in landscaping as a bedding plant.