Why does your Rhododendron alabamense have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.
Alabama Azaleas are highly sensitive to mineral salts. Excessive use of synthetic fertilizers leads to salt buildup in the substrate, which draws moisture out of the leaf margins, causing characteristic brown tips.
As an acid-loving plant that prefers consistent moisture, periods of drying out cause the extremities of the leaves to desiccate first. This is common when the peat-based media used for Rhododendrons dries out completely.
Rhododendron alabamense has shallow, fine root systems that are prone to rot in heavy or waterlogged soil. Damaged roots cannot transport water to the leaf edges, resulting in necrotic tips.
In very dry air or high-wind environments, the transpiration rate can exceed the roots' ability to supply water. This loss of moisture through the leaf margins leads to browning at the tips.
Your plant might also be experiencing one of these issues:
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