Volunteer Pine Covered in Cones vs. Mature Pine with None

Front yard volunteer white pine (4–5 yrs) loaded with budding cones. Backyard 20-yr, 50-ft same species, healthy, no visible cones. Asked if male/female trees.

The expert said white pine not male/female. Coning intervals ~3 years. Stress increases coning. Individual variation huge—like human fertility. Seed orchards select for heavy coning.

Cone Biology

• No male/female trees in white pine.
• Coning cyclic (~3 years).
• Stress → more cones.
• Individual genetic variation.