20+ Rhododendron Leaves Turning Brown. Rhododendrons which are not happy tend to show this by their leaves turning yellow. Generally, rhododendrons thrive in u.s.
Generally, rhododendrons thrive in u.s.
Bottom leaves turn yellow, the tips of the leaves may turn brown, the whole plant may droop (which also happens with underwatering). Wilting, browning at the edges, brown spots in the center of the leaf or very dark green veins are all signs of different problems. Winter burn causes rhododendron leaves to turn brown and eventually fall off. If your newly planted tree has leaves wilting, leaves turning yellow or looks like it's dying, try this.