So, tulip bulbs need to be dug up and replanted?

So, tulip bulbs need to be dug up and replanted?

I did not know that. A friend mentioned it. I planted 20 bulbs two Octobers ago. Six months later, I think 18 of them bloomed. I did nothing to them and and now only five bloomed this year. Granted they are lovely but still. So what do I do? Dig them up when they die in a few weeks and replant in the fall? Here's the pix of the few survivors, more behind the cut.









My garden..

My garden..

so my room is clean for once.

so my room is clean for once.

The Room in the East

The Room in the East

Hi!

Hi!

My room

My room

My garden in June

My garden in June