The practice of dividing these flowering plants, specifically to reduce overcrowding, revitalize bloom production, and improve overall plant health, is a crucial aspect of iris maintenance. This process involves separating the rhizomes, or underground stems, of mature clumps, discarding older, less productive sections, and replanting the healthier, more vigorous portions. A common example includes dividing a clump of bearded irises that has become densely packed and exhibits diminished flowering.
This horticultural task promotes robust growth and abundant blooms. Overcrowding leads to competition for resources, hindering the plant’s ability to absorb sufficient nutrients, water, and sunlight. Regular division ensures each rhizome has adequate space, contributing to increased flower production and reduced susceptibility to disease. Historically, this method has been used to rejuvenate aging iris beds, propagating desired cultivars, and maintaining the health and vigor of iris collections.
