Cassava (Manihot esculenta) comes from South America but has become a major source of carbohydrates for many peoples around the world. This is especially true in low-income areas since it is cheap to grow. Only when properly cooked the starchy root of it is edible. The rest of the plant is poisonous if eaten. Cassava's natural starches are also useful in laundry products, and it is under investigation as a source of biofuel as well.

The Nephrolepis exaltata is commonly known as the boston fern or sword fern. It is a common and popular houseplant that is native to tropical environments. While the boston fern can survive droughts, it prefers humid environments and should be misted regularly. It is generally considered non-toxic and is pet friendly.

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.

A flame violet (Episcia cupreata) plant is widely cultivated and desired for its cheerful-looking flowers and variegated green and coppery leaves. The genus name, Episcia, comes from the Greek word that means ‘shaded’; referring to its usual habitat. This plant crawls and trails and is ideal for a hanging basket, container, and ground cover.

The heart of jesus is a poisonous leafy plant. Its paper-thin, heart-shaped leaves lend the plant its common nickname, along with names like "angel wings" and "elephant ear." Though native to South America, its primary hub of cultivation is now around Lake Placid, Florida, where it has become a popular centerpiece for an annual festival.

The focal point of a dieffenbachia is the beautiful look and patterns of the foliage, which are often variegated. This plant has showy white blooms, but only flowers in perfect conditions. Use caution, because the dieffenbachia is poisonous; if the sap is ingested it can cause muteness for up to two weeks by numbing the throat and vocal cords.

Desert rose is widely cultivated as a houseplant or as bonsai for its beautiful flowers. As a succulent plant originating from the Sahara and tropical Africa and Arabia, it requires a minimum temperature of 10 ℃ to survive. Its sap was used to poisoning arrows in Africa.

The nerve plant is an excellent houseplant that is native to South American rainforests. The patterns on the leaves are highly decorative, and the plant needs to be maintained at a temperature above 13 ℃ and watered regularly. This Fittonia albivenis can be difficult to grow, so it is recommended that you purchase it directly from a nursery.

Papaya is a fruit-bearing plant that originates from Central America. The fruits are edible and sweet and juicy when ripe. An enzyme collected from the milky sap is used as a meat softener, which if ingested may be toxic. Keeping a papaya plant in your garden will welcome many birds to your landscape.

The great bougainvillea is best known for its bright flowers. It has spread around the world as a garden plant. This plant thrives in warm environments. The great bougainvillea is a woody, climbing plant that winds its way around other plants as it grows. It also has thorns that aid in its climbing habit.

The common lantana is a flowering plant that grows best in tropical environments. It spread outside the Americas when the Dutch brought it to Europe. The plant is generally regarded as an unwanted weed that reduces biodiversity. Additionally, it is toxic to livestock and harms the output of farmland.

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.

It may surprise you to know that cashew (Anacardium occidentale) is related to poison ivy, pistachio, and even mango! It is a tropical evergreen native to Brazil and produces a wood used to build shipping crates, boats, and charcoal. The resin in the shells of the fruits are used to make insecticides and plastics, so the nuts must be separated from the shells before being sold as food. Explorers from Portugal are responsible for introducing cashews to the outside world.

Common coconut palm (Cocos nucifera) is a broadleaf evergreen native to the Western Pacific tropical islands. In the United States, common coconut palm grows in Hawaii, Southern Florida, and Texas. This tree produces coconuts.

Turnsole (*Heliotropium indicum*) is a plant species native to Asia. The species develops long bunches of purple- or lavender-colored, five-petaled flowers. Turnsole has been introduced to much of the tropical and subtropical world though it is very often considered a pesky invader.

Star of Bethlehem (Hippobroma longiflora) is a perennial, herbaceous plant whose blossoms look similar to jasmine flowers but are not fragrant. Produces a milky white sap that is highly toxic and irritating to the skin. Contact with the eyes can cause blindness. Avoid handling this plant with bare hands.

Four o'clock flower (Mirabilis jalapa), also known as the marvel of Peru, is a perennial, herbaceous, bushy plant with fragrant, showy flowers, commonly cultivated for ornamental purposes. During bloom time, its flowers are closed most of the day; they open between four and eight o'clock, hence the common name four o'clock flower.

While most assume that the sweet potato vine is a potato, it is not considered nightshade. However, sweet potatoes and potatoes both belong to the order of Solanales. Its culinary use is wide and can be fried, baked or boiled.

The artillery plant is often utilized as a groundcover or an ornamental in many landscapes. It's commonly named the "artillery plant" because the males generally produce pollen in an explosive way. It grows best in a humid environment in partial shade or indirect sunlight. It's a particularly popular plant in indoor rock gardens.

Golden trumpet (Allamanda cathartica) is a plant species native to Brazil. Golden trumpet is mentioned in Flora Brasiliensis. It is the official flower of Canovanas, Puerto Rico. If this plant is not pruned, it can grow to a height of 6 m.