The field performance of a transgenic asparagus (Asparagus ofikkdis L.) line was evaluated in a small-scale trial from 1989 to 1992. Compared to the parental genotype, this transgenic line had low vigour and poor yield. Careful monitoring of the field trial site detected no dispersal of transgenic pollen during the trial, and the absence of volunteer plants following the completion of the trial. Nutritional analysis of the harvested spears established no significant differences between the transgenic line and the parental genotype with respect to content of ash, crude protein, fat, insoluble dietary fibre, soluble dietary fibre, carbohydrate, and individual amino acids.