Low Grow Approved. Limbo GP presents the next generation of the popular Limbo series. Large, grandiflora-sized light blue flowers with darker veins cover a dwarf plant habit, and when other petunias stretch, the Limbos will not. "GP" in this series stands for garden performance, thus the plants remain compact in pots, but with a slightly more vigorous spread in the garden and landscape. Limbo GP Blue Vein petunias are genetically dwarf in nature and the plant habit still remains lower to the ground in garden beds, presenting a neat and tidy appearance.