Limbo GP Blue Petunia Seeds are Low Grow Approved. Limbo GP presents the next generation of the popular Limbo petunia series. Large, grandiflora-sized blue flowers 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 Petunia's genetically dwarf nature translates to no growth regulators in production, and the plant habit still remains lower to the ground in garden beds, presenting a neat and tidy appearance.