Hi there, i have just started growing chillies and don't know much. i have a rococo orange plant and it has just lost all of its leaves and is no longer producing, however i have the same one next to it witch is going fine. any help?
If it came on very suddenly its probably either a disease or root rot...Has it been pretty damp? As Hendrix mentioned without pics its impossible to know??? Is it just yellow/dropping leaves or was there some wilt before? Did it have any other discoloration to the leaves? Did you do a once over for pests? Have you recently fertilized? The questions could go on and on...to upload a pic open a photobucket (or similar) account and then copy and paste them into your reply.
Get a good magnifying glass and check plant and soil closely for pests. Larvae in the soil can destroy a plant fast. Also, Welcome to THP! I love your country so much. Most beautiful place I ever visited.