[Autumn]

Also keep in mind that plants also count bush tiles, vines, flowers, nests and all that jazz, I've shown this off with a doriad ranger who uses talvyd with entangle trap, it can add up quickly because vines, bushes and flowers can all stack onto eachother, allowing you to get up to +40 power on a ryemei under perfect conditions, and QUITE quickly, which adds up before CM or Crit bonuses as Lolzy pointed out, So that 40 damage quickly multiplies into 100 from CM, and likely about 150 from crit damage, as well as anything else like bloody palms for an extra 1.12 damage bonus, or 1.17 if you're going far enough, likely adding up to about 168-175 extra damage on a Ryemei, which is no small number.

It also adds great consistent damage otherwise, you just have to keep in mind that flowers arent the only plant to count for the overgrown staff's effect, try experimenting.