Cacti and Succulents are very adaptable houseplants and can survive under a wide variety of conditions. They are very hard to kill and if properly cared for require very little maintenance and can provide the homeowner years of pleasure.
All Cacti are succulents, but not all Succulents are cacti. Cacti belong to the family Cactaceae and are Xenophytes. Xenophytic plants are a species of plants which have adopted to survive in dry environments with little or no liquid water. Converse to popular belief, dry does not necessarily mean deserts and hot. The Northern Arctic and Antarctica are two of the driest areas in the world, and yes, cacti or succulents are found there.
Gymnocalycium mihanovichii, often called moon cactus, is a species of cactus from South America commonly grown as a houseplant. The most popular cultivars are varied mutants which completely lack chlorophyll, exposing the red, orange or yellow pigmentation. These cultivars are often called moon cactus. Since chlorophyll is necessary for photosynthesis, these mutations die as seedlings unless grafted onto another cactus with normal chlorophyll
The Coral Cactus (Euphorbia Lactea Cristata) is not really a cactus, but two succulent plants joined together to form a beautiful “Franken-plant." Fan-shaped Eurphorbia lacteal is typically grafted on top of a Euphorbia neriifolia or a cactus root stock. The showy part of the plant, the section that resembles coral, is called the crest, and is the result of a rare mutation in Euphorbia lactea favored by horticulturists who mass produce these plants for sale
The genus Cereus was one of the first cactus genera to be described; the circumscription varies depending on the authority. The term "cereus" is also sometimes used for a ceroid cactus, any cactus with a very elongated body, including columnar growth cacti and epiphytic cacti.
Cleistocactus is a genus of columnar cacti native to mountainous areas of South America. The name comes from the Greek “kleistos” meaning “closed”, referring to the appearance of the flowers. The stems of these cacti are tall, mostly slender and often many-branched with numerous ribs with closely set areoles and spines
Disocactus is a genus of epiphytic cacti found in Central America, the Caribbean and northern South America. The species grow in tropical regions either on trees as epiphytes or on rocks as lithophytes.
Echinocactus is a genus of barrel cacti in the subfamily Cactoideae native to southwestern United States and northern Mexico
Echinopsis is a large genus of cacti native to South America, sometimes known as hedgehog cactus, sea-urchin cactus or Easter lily cactus
Espostoa is a genus of columnar cacti, comprising 16 species known from the Andes of southern Ecuador and Peru. It usually lives at an altitude of between 2625 and 5200 feet (800 and 2500 m). The genus is named after Nicolas E. Esposto, a renowned botanist from Lima.
Ferocactus is a genus of large barrel-shaped cacti, mostly with large spines and small flowers. There are about 30 species included in the genus. They are found in the southwestern United States and northwestern Mexico
Gymnocalycium, commonly called Chin Cactus, is a genus cacti. Their main area of distribution is Argentina, part of Uruguay, Paraguay, southern Bolivia and part of Brazil.
Mammillaria is one of the largest genus of Cactaceae family. Most of the species are native to Mexico, but some come from the southwest United States, the Caribbean, Colombia, Venezuela, Guatemala and Honduras.
Matucana is a genus of cacti, containing approximately 20 species of mostly globular plants. The genus is only known from Peru.
Myrtillocactus (from Latin, “Blueberry Cactus”) is a genus of cacti. The genus is found from Mexico to Guatemala.
Neoraimondia is a genus of medium to large cacti from Peru. It is a psychoactive cacti and its different cacti have been known to contain the chemicals 3,5-Dimethoxy-4-hydroxyphenethylamine and 3,4-Dimethoxyphenethylamine.
Opuntia, also known as Nopales or Paddle Cactus, is a very large genus of cacti. They are native from Canada, to Chile and Argentina.
Pachycereus is a genus of 9–12 species of large cacti native to Mexico and just into southern Arizona, United States. They form large shrubs or small trees up to 15 m or more tall, with stout stems up to 1 m in diameter.
Parodia is a genus of cacti, native to the uplands of Argentina, Peru, Bolivia, Brazil, Colombia and Uruguay. This genus has about 50 species, many of which have been transferred from Eriocactus, Notocactus and Wigginsia. They range from small globose plants to 1 m (3 ft) tall columnar cacti
Pilosocereus (from Latin, "hairy cereus") is a genus of cactus. Tree cactus is a common name for Pilosocereus species. The commonly cultivated Pilosocereus pachycladus (syn. Pilosocerus azureus) is a blue cactus with hairy areoles that emit golden spines
Polaskia is a genus of tree-like cacti reaching 4–5 m high, comprising 2 species. The genus is found in the Mexican states of Puebla and Oaxaca.
Rebutia is a genus in the family Cactaceae, native to Bolivia and Argentina. They are generally small, colorful cacti, globular in form, which freely produce flowers that are relatively large in relation to the body.
Rhipsalis is a genus of epiphytic cacti. They are typically known as Mistletoe cacti and most occur in Brazil. It is the largest and most widely distributed genus of epiphytic cacti.
A number of species of the genus Stenocactus are popular in cultivation. The plants are globose and remain relatively small making them very manageable in pots. Additionally, they grow easily and flower readily
Stenocereus (Gk. stenos, narrow, L. cereus, candle) is a genus of columnar or tree-like cacti from the Baja California Peninsula, Mexico and Arizona
Weberocereus is genus of cacti. It produces a green and white flower and is found mainly in Costa Rica and Nicaragua.Most of the epiphytic "jungle" cacti genera have at least a few members which are common in cultivation