Why are the leaves on my 5 yr old rhododendron turning brown? No prob

Joanne
by Joanne
  1 answer
  • Hillela G. Hillela G. on May 16, 2017

    Apply fertilizer May to Late June. Soil is too alkaline (unlikely in Scotland) apply sulphate of ammonia and plant with plenty of peat. Water with rain water, not tap water.