Description
Maximum Strength Rooting for Difficult Hardwood Cuttings
Take on the toughest propagation challenges with Hormex Rooting Powder #16. Formulated with 1.60% Indole-3-Butyric Acid (IBA), this high-strength rooting hormone is designed specifically for very difficult hardwood cuttings and woody plant varieties that require extra stimulation to root successfully.
Ideal for experienced growers and professional propagators, Hormex #16 delivers powerful, reliable results when lower-strength hormones aren’t enough.
Why Growers Choose Hormex Rooting Powder #16:
- 1.60% IBA for maximum root stimulation
- Designed for difficult hardwood and woody plant cuttings
- Promotes rapid root initiation and strong root systems
- Helps improve success rates on hard-to-root species
- Works in all growing media (rockwool, coco, soil, peat, clay)
- Clean formula—no alcohol, dyes, thickeners, or preservatives
Best For:
- Hollywood juniper, arborvitae, black locust, macadamia
- Hardwood cuttings from trees and woody shrubs
- Difficult-to-root plant varieties requiring higher hormone strength
Professional-Grade Strength:
- Recommended for experienced growers and propagators
- Use only when higher-strength rooting hormone is needed
- Always confirm appropriate strength for your plant type before use
Versatile for Any Growing Setup:
- Compatible with soil, coco, peat moss, and hydroponic systems
- Ideal for use with cloning cubes and propagation trays
- Supports strong root development in challenging conditions
How to Use:
- Take a 3″–8″ cutting just below a node at a 45° angle using a clean blade
- Dip the cut end in water or cloning solution
- Coat the bottom 1″ with rooting powder
- Tap off excess and place into your preferred rooting medium
- Maintain proper humidity, temperature, and lighting
Proven Performance:
Backed by over 60 years of research, Hormex provides professional-grade solutions for even the most difficult propagation scenarios.
Built for Growers:
When standard rooting hormones aren’t enough, Hormex Rooting Powder #16 gives you the strength needed to successfully propagate hardwood cuttings and challenging plant varieties.






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