Pakistan's `50 Million Olive Tree Tsunami' targets ~10 million acres of olive expansion by grafting commercial cultivars onto wild Olea ferruginea rootstocks, but physiological/ecological impacts are unknown. This 2023--2025 field study sampled 450 trees across three Balochistan sites (wild: \( n = 150 \); Arbequina, Coratina, Picual: \( n = 100 \) each) with \( n = 1{,}240 \) leaf measurements. Wild leaves were 56--63% smaller (\( 9.8 \) vs. \( 22.4 \)--\( 26.8 \, \text{cm}^2 \); \( P < 0.001 \); \( \eta^2 = 0.926 \)), but had 83--118% higher stomatal density (\( 285 \) vs. \( 131 \)--\( 156 \, \text{mm}^{-2} \); \( \eta^2 = 0.934 \)) and 36--40% smaller stomata. This strategy reduced trans... More >