Definition:
Cultivar is an abbreviation of 'cultivated variety'. Each cultivar is a version of a plant species that is not genetically different enough to be a separate species. For example, characteristics may include a different flower or leaf color, fruit flavor, or height.
They are produced in nurseries by taking cuttings instead of seeds - with seeds, it would not stay true to the desired characteristics.
Examples:
The different kinds of apples - from Gala to Honeycrisp - belong to the same species, but are different cultivars.
