I inherited a bunch of plants from a neighbor that moved. One was a very sickly rose bush. A few days ago, bulbs started sprouting around it. When I looked, the bulbs seemed to be totally crowding the rose. So... I just dumped out the pot and carefully separated all of its contents/roots. The bulbs were literally strangling the rose bush and despite some major holes in the bottom of the pot, it was getting no drainage.

What are these bulbs? Are they worth planting in a separate pot? What size? How many in each pot?

For size reference, the rose bush is in the front of pic 1 and the pots in the background (rt) are a 6 inch black plastic and 14 inch clay pot. Some of the bulbs are as big as a potato.

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Bigger pics are available at photobucket:

http://i888.photobucket.com/albums/ac90/driftwoodtxyz/Bulbs/IMG_0259.jpg

http://i888.photobucket.com/albums/ac90/driftwoodtxyz/Bulbs/IMG_0264.jpg