When the directions for planting a bulb is say 5 inches (or whatever), do I compensate for the mulch? Do I plant 5 inches in the dirt and I can still put my 2-3" of mulch on top? Thanks.
I would compensate at least a bit if putting on mulch 2-3" thick. I'd plant them a bit more shallow, like plant at 4" instead of 5". In my opinion, planting depth need not be exact and bulbs will be fine.
Planting Daffodil bulbs a bit on the shallow side, usually causes them to multiply a bit faster than what they normally would.