By Poppie18
United Kingdom 
Please help! Recently rescued my Nans potted Japanese Pieris it’s about 12 years old and has been neglected the past year. It has developed black spots all on leaves and stems. What can I do to fix/save?
24 Mar, 2024
Answers
I agree the lumps on the stems look like scale insect. There are sprays that will sort them.
Give the plant a good feed and watering too.
24 Mar, 2024
Rain water for preference. Feed with ericaceus plant food.
24 Mar, 2024
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Looks remarkably like Scale insect. There are specific insecticide sprays for it. Neem Oil is as good as any and more natural than some.
24 Mar, 2024