Especially for the past 70 years, considerable breedingBreeding and selectionSelection emphasis has been placed on producing small-growingSmall-growing, highly floriferous kalanchoes for the global trade in plants suitable for indoor cultivationCultivation, including in places with harsh, continental-type climatesClimate. Especially Kalanchoe blossfeldiana Poelln. and hybrids containing geneticGenetic material derived from it have yielded highly desirable selectionsSelection that have sometimes been described as cultivarsCultivars or that are available under trade designations. However, given the vegetative and reproductive morphological variation found among speciesSpecies of Kalanchoe Adans., several of them work well as groundcovers in open bedsOpen beds, as outdoor accent plantsAccent plants, or when planted in the open in containers. These speciesSpecies are typically drought-hardy and rapidly accumulate biomass. Even when not in flowerFlower, many speciesSpecies provide interest when cultivated as accent plantsAccent plants because of their variously shaped, colorful, and often textured foliage. In mild-climateClimate areas globally, several speciesSpecies and some hybrids of Kalanchoe are increasingly grown in gardens and specialist collections, as well as in general domestic and large-scale landscapingLandscaping. The leavesLeaf of many kalanchoes are attractively shaped and colorful, taking on more intense shades of, for example, red or orange in winter so providing colorColor throughout all the seasons. In addition, in autumn and winter often dense clusters of small, yellow, red, orange, or muted-colored, tubular to cigar-shaped flowersFlower with variously reflexed petal lobes are borne on erect, branched floweringFlowering stems. These traits have all contributed to generating considerable interest in using a range of kalanchoes in landscapingLandscaping projects. In this chapter, a review is provided of the breedingBreeding and use of Kalanchoe taxa for outdoor landscapingLandscaping, an aspect of the horticultural use of kalanchoe material that has so far been neglected, given that considerably more historical and recent emphasis has been placed on growing kalanchoes indoors. Attention is drawn to the invasivenessInvasiveness of some speciesSpecies of Kalanchoe, especially a group of Malagasy originOrigin. Surplus material should therefore be responsibly disposed of, and never be discarded where it could spread into natural vegetation. A selectionSelection of speciesSpecies should never be cultivated in mild-climatesClimate on any scale.

Breeding Kalanchoes (Kalanchoe spp.) for Landscaping: Current Initiatives and Prospects

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发表日期：

2025年

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Gideon F. Smith

摘要

Especially for the past 70 years, considerable breedingBreeding and selectionSelection emphasis has been placed on producing small-growingSmall-growing, highly floriferous kalanchoes for the global trade in plants suitable for indoor cultivationCultivation, including in places with harsh, continental-type climatesClimate. Especially Kalanchoe blossfeldiana Poelln. and hybrids containing geneticGenetic material derived from it have yielded highly desirable selectionsSelection that have sometimes been described as cultivarsCultivars or that are available under trade designations. However, given the vegetative and reproductive morphological variation found among speciesSpecies of Kalanchoe Adans., several of them work well as groundcovers in open bedsOpen beds, as outdoor accent plantsAccent plants, or when planted in the open in containers. These speciesSpecies are typically drought-hardy and rapidly accumulate biomass. Even when not in flowerFlower, many speciesSpecies provide interest when cultivated as accent plantsAccent plants because of their variously shaped, colorful, and often textured foliage. In mild-climateClimate areas globally, several speciesSpecies and some hybrids of Kalanchoe are increasingly grown in gardens and specialist collections, as well as in general domestic and large-scale landscapingLandscaping. The leavesLeaf of many kalanchoes are attractively shaped and colorful, taking on more intense shades of, for example, red or orange in winter so providing colorColor throughout all the seasons. In addition, in autumn and winter often dense clusters of small, yellow, red, orange, or muted-colored, tubular to cigar-shaped flowersFlower with variously reflexed petal lobes are borne on erect, branched floweringFlowering stems. These traits have all contributed to generating considerable interest in using a range of kalanchoes in landscapingLandscaping projects. In this chapter, a review is provided of the breedingBreeding and use of Kalanchoe taxa for outdoor landscapingLandscaping, an aspect of the horticultural use of kalanchoe material that has so far been neglected, given that considerably more historical and recent emphasis has been placed on growing kalanchoes indoors. Attention is drawn to the invasivenessInvasiveness of some speciesSpecies of Kalanchoe, especially a group of Malagasy originOrigin. Surplus material should therefore be responsibly disposed of, and never be discarded where it could spread into natural vegetation. A selectionSelection of speciesSpecies should never be cultivated in mild-climatesClimate on any scale.