More advice please for this novice gardener.
I have potted up some winter pansy seedlings and they are raised from the ground on a bench. Will they be at risk from slugs there, and if so what could I best use to deter slugs? I would like it to be organic, but wonder if these seedlings might be at risk from damage as they are so tiny.
Also I know have a very large and wonderful raised bed, which means I can do my own gardening - hooray! I have put in all the plants that I love, but will have control their size a bit as they re in a raised bed. How do I know whether I will be preventing next year's flowering if I cut them back to keep them a reasonable size? I am thinking of things like Guelder rose, lilac bush, fuscia, cistus, Japanese anemones etc. Are there different rule for each one?
Lots of thanks to the collective Gransnet gardening brain! 
All the different family surnames


