The sun has been extremely brutal this year. Brugs do appreciate afternoon shade. I found out the hard way. For the second flush of blooms I bought a 50% shade cloth for my deck where I keep my brugs. Ended up using a camoflouge netting also that DH had around to block more afternoon sun. Mine were still getting sunburned!!

Make sure the brugs are not standing in water, their roots tend to rot. It's very common for the leaves to turn yellow and fall off. They regenerate very quicly, so as long as it's putting on new growth, don't be too concerned. If the new leaves are malformed, then that could indicate a virus.

As far as the deformed leaves that 'could' be a problem. Brugs are very susceptable to virus'. Normally in ideal growing conditions, they won't show symptoms. It could also be just sunburned leaves. Make sure your plants don't have any pests on them as those little sap suckers can do some damage like that.

Make sure your hands & tools are scrupulously clean when working from plant to plant. Virus' can spread to other plants in this manner. You can work on the same plant, but if you move to the next, wash your hands and tools.

Just keep watering and feeding them, if they don't bounce back, then I would segregate the sickly ones from the rest just in case it is a virus. A virus could spread to the rest of them and the only thing left is to destroy them.

Most of this info I read in the Brugmansia and Datura book I just purchased. If you're a serious brug enthusiast, I highly reccommend it. The book can be purchased on Amazon.com for less than the cost of a brug plant at the nursery. Good luck!

Nancy