Do you know which varieties you have? There are some bred for pot culture which only grow to about six foot, and don't need much pruning at all, permanently staying fairly small.
Muscari should be dying back now, so what is happening is probably quite normal. It'll be back next spring.
Sorry, I can't read your full question as it's no showing, but have a look here to see if you have leaf curl - it doesn't sound like it.
The next time to spray it is just before leaf fall. In the meantime, clear up the infected leaves to limit spread next year. In spring, spray in late January and a fortnight later.
Don't like to disagree with you, Geoff, but I wouldn't put a Swiss Cheese plant out for the reasons you've listed - it gets torn very easily, and leaves don't recover.
And yet I love it.
Now lilies are a different matter - completely overpowering and rank.
Deservedly so - it was pretty pathetic.
Any chance of a photo?
It was pretty wet for us yesterday, too, but has been reasonably bright and dry so far today, which makes a nice change.
Now, will it last long enough for me to move a few plants around and plant others?
I have a red acer in the ground - my soil sounds very similar to yours, being slightly acid - and it has thrived for the last 20 years, so I wouldn't worry about it. Especially as I think it's probably hit alkaline builders' rubbish long ago