2025 April Update

• Above is sample #27 abaxial trichome photograph and layout we use to count and verify trichome density.

• A robust morphological assessment key has been compiled and is currently undergoing validation by examining over 90 Morus rubra samples using microscopic morphological traits (such asthe above trichome density, as well as petiole groove/vascular bundle orientation) to compare against DNA tested results.

• We continue to try to source pure Morus rubra outside the historical areas where White Mulberries were introduced. Many seed and seedling vendors continue to inadvertently sell hybrid Red Mulberries as pure. Some morphologically pure seedlings are in the greenhouse to prepare for the start of plating onto partner sites next year.