Thanksgiving cactus
Noun: * A type of epiphytic cactus (Schlumbergera truncata, formerly Zygocactus truncatus) native to southeastern Brazil, characterized by flattened, segmented stems with pointed, claw-like projections. It is widely cultivated as a houseplant for its showy, tubular flowers that typically bloom in late autumn, often around the Thanksgiving holiday in the United States.
The term "thanksgiving cactus" is used to specifically identify this plant species, distinguishing it from the similar "Christmas cactus" (Schlumbergera x buckleyi). It is used in horticultural, botanical, and casual contexts. * As a common noun: "I need to repot my thanksgiving cactus." * As a proper noun in its full botanical name: "The Thanksgiving cactus, Schlumbergera truncata, requires different care than its holiday cousin."
- The thanksgiving cactus on the windowsill is starting to form buds.
- To encourage flowering, a thanksgiving cactus needs cooler nighttime temperatures and longer periods of darkness in the fall.
- The key difference between a thanksgiving cactus and a Christmas cactus is the shape of its stem segments.
- The term is often used in comparative discussions with other holiday cacti, primarily the Christmas cactus and, less commonly, the Easter cactus (). The defining morphological feature is the pointed, serrated edges on the stem segments (cladodes).
- In botanical taxonomy, it is synonymous with and sometimes referred to by its older name, "crab cactus," due to the claw-like shape of its stem segments.
- Christmas cactus (): A closely related hybrid with more rounded, scalloped stem segment edges, typically flowering a few weeks later.
- Holiday cactus: A general, non-scientific term that can refer to either the Thanksgiving or Christmas cactus.
- Zygocactus: An obsolete genus name under which the Thanksgiving cactus was once classified.
- Cladode: The botanical term for the flattened, leaf-like stem segments that characterize this plant.
- Crab cactus (archaic/common name)
- (botanical name)
- (former botanical name)
- "Holiday cactus confusion": A casual phrase describing the common difficulty in distinguishing between a Thanksgiving cactus and a Christmas cactus.
- Example: "I'm suffering from holiday cactus confusion—I can never tell which one I have!"
- South American jointed cactus with usually red flowers; often cultivated as a houseplant; sometimes classified as genus Schlumbergera