Thanks Del, Jim and Nhu for your replies and links. Virus testing in plants is not available in my area as far as I know, so thats not an option I have. Del, you have sent a link with mosaic on hippeastrums. Is it that virused leaves of crinums look similar to virused leaves of hippeastrums? I ask this because I have never seen a virused crinum before nor have I been able to find any pics of what virus in crinums look like. Thanks Rahul