I asked a question about my sick Rhododendron a few days ago and Pimpernel suggested it might be Phytophthera. I Googled this and found it means - in Greek - "plant killer!" So ... after finding that the disease seemed to be spreading to the new shoots which had, until then, seemed perfectly healthy, I decided to dig it up and dispose of it. I was surprised to find that, despite having been planted into the ground in ericaceous compost three years ago, it had made no apparent root growth, even though it had been regularly fed with a good Spanish brand of ericaceous feed and had been regularly watered. Did it perhaps have the disease when it was in the original pot, or when I planted it into a large tub, or when it was planted into the new compost in the ground? The question is now academic as it is an ex-Rhododendron, but I am interested to learn where the disease came from, whether it may still be present in the ex-hole and whether there is anything I should do to ensure that whatever else is planted there in the future does not become an ex-plant!
- 8 Jul, 2012