A defensible competitive ranking needs verified damage, attack speed, rarity and upgrade data. Those values are not publicly documented yet, so we will not invent an S-to-D chart. These plants are confirmed in gameplay:
A living crop shown fighting in published Defend my Ring Farm gameplay. Its exact roll odds and final stats have not been officially published.
Open evidence →Gameplay verifiedA living crop shown as part of the plant army in published gameplay. We do not assign it a fabricated tier while official balance data is unavailable.
Open evidence →We will rank plants only after comparable values can be verified in-game or through an official changelog. Until then, “unknown” is more useful than a confident-looking fake tier.