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Azaleas are flowering shrubs making up part of the genus Rhododendron. Originally azaleas were classed as a different genus of plant, but now they are recognised as two of the eight sub-genera of rhododendrons - Subgenus Pentanthera typified by
Rhododendron nudiflorum and Subgenus Tsutsusi typified by Rhododendron tsutsusi.
There are deciduous azaleas, and evergreen azaleas. One of the major differences between azaleas and the rest of the rhododendron family is their size. Another is their flower growth. Rhododendrons grow their flowers in clusters, while most azaleas have terminal blooms (one flower per flower stem). However, they have so many stems that during the flowering season they are a solid mass of colour. Azaleas are recognised by these flowers blooming all at once, in a showy display for a month or two in spring. The exception to this rule is a small group of azaleas which grow their flowers in tight terminal clusters that look like little balls of colour.
Plant enthusiasts have created hybrid azaleas for hundreds of years. This human genetic modification has produced over 10 000 different species from cuttings. Azalea seeds can also be collected and germinated.
Azaleas should be grown in well-drained garden soil or in pots, in a cool, shady position. FertilizerFertilizers are chemicals given to plants with the intention of promoting growth; they are usually applied either via the soil or by foliar spraying. Fertilizers typically provide, in varying proportions, the three major plant nutrients ( nitrogen, phosph is optional, although some species do need regular pruningIn microeconomics, pruning taken as a metaphor from gardening, refers to the removal of "excess" items from a budget. In gardening, pruning is the practice of removing diseased, overmature, or otherwise unwanted portions from a woody plant. Pinching back.
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