草臥れる[kutabireru] to get tired
遺草[isou] posthumous works
一年草[ichinensou] annual (plant)
詠草[eisou] draft poem
下草[shitakusa] undergrowth

仮名草紙[kanazoushi] story in the kana
伽草子[togizoushi] fairy-tale book
海草[kaisou] marine plant
乾草[kansou] hay
甘草[kanzou] liquorice

靫葛[utsubokazura] pitcher plant
靫草[utsubogusa] common self-heal (Prunella vulgaris subsp. asiatica)

浜靫[hamautsubo] broomrape (Orobanche coerulescens)