structural:scholar_edition, structural:reformatting
Pests and diseases

Leeks suffer from insect pests, including the thrips species Thrips tabaci and the leek moth. Leeks are also susceptible to leek rust (Puccinia allii). Damage from thrips is greatest when under water stress in hot, dry weather. In these conditions, insect reproduction occurs quickly while plant growth is slowed. Thrips can be controlled by chemical pesticides and by intercropping with legumes or other plants.