A cultivar is a kind of cultivated plant that people have selected for desired traits and which retains those traits when propagated. Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting, tissue culture, or carefully controlled seed production. Most cultivars arise from deliberate human manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word cultivar was coined as a term meaning "cultivated variety".

किसी पौधे की कृषिजोपजाति (किस्म) मूल पौधे से भिन्न होते हुए भी उस पौधे की मूल विशेषताओं को अपने में समाहित रखती है। आमतौर पर किसी पौधे की किस्म उसे ज्यादा सुन्दर या लाभप्रद बनाने के लिए विकसित की जाती है और इसे एक अलग नाम भी दिया जाता है।