From the external circumstances at that time, merely looking at the surface, the plant bombs thrown by those plants appeared unlikely to pose a threat to those deities. The deities themselves, considering this aspect, ultimately chose to evade rather than take that wave of attack seriously.
However, when the deities made that decision, they certainly forgot to consider one factor.
Although the Divine Realm is indeed dominated by ability of rules, an attack even without rule-based ability can still, if its strength reaches a certain level, pose a lethal threat to deities.
Just like this Treant suspected to be the corpse of a True God—even without any cultivation level at the moment—if in its enormous size, if Zhou Tian and his allies were to fight it in its prime state, no one could guarantee victory.
