Bulbs growing

They could also probably come up blind because they are young bulbs not yet mature. If they look healthy they might just need time.

4" I didn't know they needed to be that deep.
Is it worth taking them out now and replanting, what do you think.

I planted lots of new bulbs in my pots last autumn and they are just peeping through. I am on tenterhooks waiting for them to bloom!

This usually happens because the bulbs haven't been planted deeply enough. They need to be at a depth of at least 4". I don't think there's anything you can do because transplanting them after the flowering period often doesn't work.

Might be worth a try though.