University of Florida

Rhododendron maximum

Common name(s): Rosebay Rhododendron, Great Rhododendron, Great Laurel, Rosebay

Plant type: evergreen large shrub
Primary method of propagation: cutting
Alternate propagation method(s): seed

Propagation by Cuttings

Cutting type: stem tip
Time of year to take cuttings: early Summer
Cutting maturity: semi-hardwood
Rooting hormone: IBA TALC 8000 PPM
Rooting environment: intermittent mist
Soil temperature for best rooting: 75-80 degrees F
Time to rooting: 8-12 weeks

Propagation by Seed

Time of year to collect seed: Autumn
Time of year to sow seed: Summer
Seed treatment: none
Time required for germination: 6-8 weeks
Comment: Germination environment temperature is 86 degrees F during the day and 68 degrees F at night.