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Mountain laurel (Kalmia latifolia) is a beautiful evergreen shrub native to the eastern United States. Propagating mountain laurel through cuttings is an effective way to expand your garden or restore existing plants. Knowing the right time and technique for harvesting cuttings can significantly increase your success rate.
When to Harvest Mountain Laurel Cuttings
The optimal time to take cuttings from mountain laurel is during late spring to early summer, typically between May and June. During this period, the plant is actively growing, and the new growth is semi-hardwood, making it ideal for rooting.
Avoid harvesting cuttings during the peak of summer or late fall, as the plant’s energy reserves are lower, and the cuttings may struggle to root. Also, do not take cuttings during winter when the plant is dormant.
How to Take Mountain Laurel Cuttings
Follow these steps to properly collect and prepare mountain laurel cuttings for rooting:
- Choose healthy, disease-free stems with at least two sets of leaves.
- Use clean, sharp pruning shears to make a 4-6 inch cut just below a leaf node.
- Remove the lower leaves to expose the stem and reduce moisture loss.
- If desired, dip the cut end in rooting hormone to encourage root development.
- Place the cuttings in a well-draining rooting medium, such as a mixture of peat moss and perlite.
Rooting and Care Tips
After planting, keep the cuttings in a warm, humid environment with indirect light. Covering the pot with a plastic bag or a propagator lid can help maintain humidity. Water the cuttings regularly to keep the medium moist but not waterlogged.
Roots typically develop within 8-12 weeks. Gently tug on the cuttings to check for resistance, indicating root growth. Once established, gradually acclimate the new plants to outdoor conditions and transplant them into your garden.
Additional Tips for Success
- Always use sharp tools to prevent damage to the plant.
- Take cuttings early in the day when the plant is well-hydrated.
- Maintain consistent moisture levels during rooting.
- Be patient, as some cuttings may take longer to root than others.
- Label your cuttings to keep track of different varieties or timings.
With proper timing and technique, you can successfully propagate mountain laurel and enjoy its stunning blooms in your landscape for years to come.