too much water by any chance? they do like to be fairly dry...not desperate but not wet..any mulch around the trunk/stem...take it away about 4-6 inches...it might be struggling to live and avoiding stemrot ..
(esconder) Mantenha a sua Caixa de Mensagens limpa, Arquivando mensagens importantes e usando regularmente a opção "Apagar TODAS as Mensagens". (pauloaguia) (mostrar todas as dicas)