Hi there. I noticed some mealy bugs on our Kentia Palm and made a solution of water, oil and soap that quickly fixed the problem. Over the following week or so though, two of the fronds have started turning brown, and one has now developed these quite significant white spots. The plant is next to a north facing window so received bright but indirect light. It has been very hot these last couple of weeks and I have had the evaporative cooling on quite a bit (it isn't usually on the rest of the year). Looking after this while my wife is away and would really appreciate some help to save her favourite plant!!
