Plant Select is a collaborative effort between Denver Botanic Gardens, Colorado State University, professional horticulturists and the landscape industry to introduce and recommend the best plants for gardens in the Rocky Mountains and High Plains regions and beyond. We strive to keep gardening alive and thriving in a busily changing world.
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Where can I get information on when to divide bearded iris, a pink perrenial gypsophelia, a dianthus ground cover, and other perrenials?
There are many sources – check with your local garden center first. They may have handouts on care and maintenance of perennials. Another source is your local county university extension office. They may have online resources, as well.