| A factorial experiment, employing a completely randomized design with three replications, was conducted during the 2018-2019 growing season at the laboratory and greenhouse of Islamic Azad University, Shirvan Branch. The study aimed to evaluate the feasibility of cultivating the medicinal plant Galbanum (Ferula gummosa Boiss) at various planting dates. The first factor was the planting date, which included four levels: February 20, March 6, March 21, and April 4. The second factor involved four seed treatments: control, primed seeds, dormant seeds, and tissue culture. The traits measured in the study were leaf number, leaf length, tuber length, dry weight, and survival percentage. Results indicated that both planting date and seed treatment significantly affected all measured traits (P≤0.01). Additionally, the interaction between planting date and seed treatment significantly influenced survival percentage (P≤0.05). Mean comparisons showed that the highest values for leaf number, leaf length, tuber length, dry weight, and survival percentage were achieved with the February 20 planting date combined with the seed priming treatment. Correlation analysis revealed significant positive relationships between leaf length and tuber length (0.879), leaf length and plant dry matter content (0.522), tuber length and plant dry matter content (0.707), tuber length and survival percentage (0.406), and plant dry matter content and survival percentage (0.509). Stepwise regression analysis indicated that plant dry matter content was the first variable included in the model, accounting for 26% of the variation in survival percentage. Leaf number was the next variable, and together, these two traits explained 33% of the variation.iven these findings, and considering the importance of planting date for cultivating Galbanum in Northern Khorasan Province, the February 20 planting date combined with seed priming is recommended as the optimal treatment for maximizing production. |