I bought some gooseberries and planted them in some self-watering containers. They did well for a few weeks but now one has lost all of its leaves and the other is losing some leaves, while other leaves are turning yellow and brown. In short, they are not thriving.
I've moved the containers a few times to adjust the levels of sunlight -- one thing I tried was to put them next to currants, which are doing well -- but this hasn't helped. More recently, I added some additional compost, heavy on eggshells, with the idea that this would provide missing nutrients. Still no dice. Any ideas? If it is relevant, I live in Massachusetts, near Boston.