Is an austrian pine a good tree to plant in Indiana?
Think hard about it — austrian pine is on the hazard list in central Indiana. Extremely common across central Indiana as 1960s-80s screen, windbreak, and highway planting, which means entire cohorts are now at exactly the age where Diplodia has hollowed out their lower crowns. Since it is no longer recommended for planting, nearly every job on one is a removal-and-replace conversation.
What you'd be signing up to clean up
Stiff needles 3-6 inches long in bundles of two shed every fall, mat in beds and gutters, break down slowly, and are sharp enough to make hand-raking unpleasant. Cones arrive annually and matter more here than on other species, because the old cones on the ground and in the crown are the reservoir that reinfects the tree.
Where to keep it away from
On this species the root story is the disease story. Ohio State notes Diplodia commonly attacks mature trees already stressed by drought or root restriction, so the Austrian pines that decline first are the ones in parking islands, narrow tree lawns, and compacted clay strips — it is not a tree that lifts walks or invades sewer laterals, it is one that gets killed by having nowhere to root.
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