I have three plants of Meconopsis zhongdianensis in flower. The plant grows a relatively thick spiny stem that increases in length as the buds ripen. I've had no problem with slugs eating plants in the open garden (as reported in previous years) but one plant in a pot had its growing point damaged by slugs, insects or some other cause. The buds continued to open at the base of the stem, which grew no further, producing a plant that some might consider more attractive than the normal plant.