The leaves of my rhododendron turn yellow and brown. What can I do? |
| (Survey: General maintenance of rhododendrons ) |
| | | CHLOROSIS
The edges turn yellow. This is caused by a high level of PH (above 7) and thus a calcareous soil. Use fertilisers enriched with iron and magnesium and try removing your rhododendron to a better suited site.
OVERFERTILISATION
Dry and brown edges mostly point to a case of overfertilisation, high salt concentration or salt water in the soil. Rince the ball or earth with lots of rainwater. | | |
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