Cactus Plants

Cactaceae is the accepted botanical family that includes cacti, a large and varied group of succulent plants. The family includes many genera and species with distinct forms, flowers, sizes, and growing requirements. ## Family-level identity The [Royal Botanic Gardens, Kew Plants of the World Online](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30000028-2) accepts Cactaceae as a family and recognizes more than 150 accepted genera. Kew describes the group as predominantly New World and mostly associated with drylands. Its family description notes that members are often spiny, but some lack spines and leaf-like stems occur in certain lineages. This broad category does not identify an individual cactus type, so no single mature size, flower color, or landscape exposure is applied here. ## Choosing a plant Select a species or named cultivar for its actual climate, light, drainage, and mature-size needs. Cacti differ widely, including epiphytic and forest-growing kinds that need conditions unlike desert species. ## Maintenance Use species-specific guidance for watering and winter care. Handle spiny plants with tools or protective gloves, and ensure container or ground soil drains freely where appropriate. ## Yavapai Firewise guidance The source lists cactus at Cactaceae family scope. This broad family record preserves the source scope and does not establish that each cactus species or cultivar was independently assessed. Follow the [Yavapai guide](https://extension.arizona.edu/sites/default/files/2025-03/FirewisePlants3-14-2025.pdf) for irrigation, placement, and dead-material removal. ## Yavapai County — 2025 source scope and care The [University of Arizona Yavapai County bulletin](https://extension.arizona.edu/sites/default/files/2025-03/FirewisePlants3-14-2025.pdf), page 1, lists Cactus with the botanical cell Cactaceae sp. and form P. It places this entry in its fire-resistant list. The matched catalog name is Cactaceae. Source form codes: C=groundcover, G=grass, P=perennial, S=shrub, T=tree and V=vine. Printed names and form codes can include source spelling errors or historical taxonomic treatments; the source wording is retained separately from the catalog name and plant-specific habit. The bulletin states that resistant plants require irrigation and frequent maintenance. It describes low shrubs or clean taller shrubs with little dead material. Maintain suitable moisture and spacing, remove dead growth and avoid continuous fuel; a regional list does not establish every selection's performance or local cold hardiness. No plant is fireproof. Keep this Yavapai classification separate from Arizona UA, Utah, New Mexico, Idaho, Colorado and other source ratings and their placement, moisture and maintenance conditions.