My experience with Pamianthe and Worsleya is that they don't like losing their roots and don't grow new ones very easily, so I would just be careful. I repot mine about every one to two years, let the old mix fall away, gently wash the roots, and carefully repot, with the bulbs sitting on the surface and the roots spread out and buried down the sides of the pot. I have slashed the sides of my pots to give more air to the roots. the roots don't seem to grow in the middle of the potting media, they will want to grow on the surface or at the sides. They then need staking, since the roots won't hold them upright, and they will anchor themselves after a while and the stake can be removed. I think repotting is important especially if you fertilize, since I think they are sensitive to salt build up in the potting medium, and also don't like it when the medium breaks down and compacts. Diana Telos > Is it a good idea to change soil of these two species and when? I am in particular a bit worried about my S. Pole-Evansii and Pamianthe > I read somewhere that blooming can fail to happen if you damage the roots. > Any advice is appreciated. > > Anders B. Petersen > Copenhagen > Denmark > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >