So I got some paper white bulbs this past winter and "grew" them in my apartment. Normally after that I'd discard them, but this time the bulbs came wiht a note that said "after flowering, continue watering to maintain leaves. When danger of frost is over, bulbs can be planted outside to naturalize."

So my question is... I have been keeping the soil damp, and over a period of time, the leaves have continued to grow out of control, sorta like a really old onion that begins sprouting and sprouting "greens". The leaves look quite ratty now...too long, and are beginning to yellow. Do I really have to keep the leaves on in order for them to naturalize successfully when I plant them outdoors in a couple of weeks? Or can I cut down the leaves now, or at least once I put them outside? And by how much can I cut them down? I'd just as soon cut the leaves down to just above the bulbs.

Thanks!