We have got a Japanese maple plant in the back garden in a pot that has suddenly seemed to have died. There are absolutely no leaves on it at all now. I asked my dad who said this is perfectly normal, but I find it strange because there's been no frost or anything.
Anyway, now another one of our plants (not sure what it's called), which had been really thriving up until a few days ago has also died suddenly. All the leaves and flowers are look charred, black and shriveled up. Another plant in a pot is also starting to die.
The reason I am concerned about ruling out possible poisoning is because the plants are all along our back fence which our neighbours next door were not happy about us putting up and have stopped speaking to us as a result. The soil had been treated with manure as well. Our climbing roses are fine, but they are not right next to the fence.
I still can't get over how quickly the plant died. It was almost overnight. What do you think is the cause?