Yarrow is the clearest example in this collection of a correspondence that is genuinely contested rather than merely unsourced, and it is worth setting out why.
Culpeper gives yarrow to Venus, and Libra follows by rulership as her air sign. His grounds are the plant's use in women's complaints and its cooling, astringent character, which is the standard Venus profile in his scheme.
Against that, the plant's entire English folk identity is martial. Soldier's woundwort, staunchweed, the Achilles legend, the battlefield use, the association is with wounds, blood and war, which is the Mars category in any planetary system. A number of later compilers accordingly place yarrow under Mars, and they have the better of the argument on the folk evidence while Culpeper has the printed source.
Neither position is a corruption of the other. This is what a real disagreement looks like: two defensible readings of the same plant, weighted differently, with no arbitrating authority. It is better content than a manufactured reconciliation, and the honest statement is that yarrow is attributed to Venus by Culpeper and to Mars by others, and that the reader should know which is which.
There is a third use with no bearing on either. Dried yarrow stalks are the traditional instrument for consulting the I Ching, in the older and slower method that preceded the three-coin technique. Fifty stalks are used, manipulated through a lengthy division procedure to generate each line of a hexagram. This is a Chinese divinatory practice of considerable antiquity and has no connection whatever to European planetary herbalism; the plant is simply a suitable stalk.