Ironwithe
this plant was native to the planet Bogden, and was known for its hard branches. The branches were compared to durasteel in strength, although its shoots are tender enough for the giant renda bear to eat. Many of these plants were exported to the Core Worlds for planting in rooftop gardens. However, on Bogden, the ironwithe died off every decade or so, and this seemed to affect offworld plants as well. Many scientists theorized that the ironwithe had a "quantum entanglement reaction" in its DNA, causing all ironwithe to die off, no matter where they were in the galaxy.