Tulips

Feed them after they flower and before the leaves die back, then leave them. It helps if they are planted relatively deep.

We went to a lot of trouble last summer with the tulips we had in pots.
We had lots, so we dried them off in the sun but still a percentage of them were attacked with mould.
The ones that were healthy we replanted and had a good show this spring.
I have to say in the past they dwindled to nothing, so I will just have to wait until next spring to see if I get the same show, I suppose!

Leave them they will start doubling up over the years and you will be rewarded by many more.

I leave them to die back, then continue to replant in the autumn. Mine tend to dwindle each year.

I have found that it makes no difference whether I dig them up or leave them in the ground. The only ones I remove are the ones shallowly planted in pots which the squirrels are likely to eat.