Watercress is Nasturtium officinale, it's a Brassica
But nasturtiums are Tropaeolum major, Tropaeolaceae family
(just to confuse things a little more)
that could be Nandina domestica but I've never seen one quite as yellow as that. It may be suffering from malnutrition.
pot it on.
4 plants in four different families is equally unlikely for rust. I have many plants with rust but all except one are Malvaceae.
and it doesn't look like rust.
Physical damage would be my guess.
not being hardy does not stop a plant being perennial. Protect it in winter and it's perennial. Lots of 'annual bedding' is tender perennials.
Zenjeff, that's the double cultivar whose name escapes me. The species is much more like the OP.
I would cut back to the good bits, there's time left for more to be prioduced
One of the Pratias?
I think all fuchsias are perennial
If there's any green left they might survive. Cut off the dead, keep them moist but don't drown them. Don't feed them until they're growing and can use the feed
i think it's a dianthus.
I had a packet of seed that produced mixed colours with blooms like that.
MIne were from Chiltern seeds not T&M but they look the same