The Q&A Archives: Propagating Hydrangea

Question: I have tried, unsuccessfully to propagate my hydrangea bushes and azaleas from cuttings. Any suggestions about method, time of year and/or growing medium? Paul Drayton Conyers, GA

Answer: Hydrangeas are generally easy to root, with certain exceptions (H. quercifolia). Softwood, semihardwood, and hardwood cuttings can be used with 1000 ppm IBA talc or solution. 3000-5000 ppm IBA talc or solution is used with hardwood cuttings. Florists'hydrangea have been rooted with 5000-10,000 ppm IBA talc under mist. Use sand:peat medium. One source says to use 20 ppm IBA. IBA is a rooting hormone. In place of mist, you can enclose the cuttings in a plastic bag or use a room humidifier.

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