今春[konshun] this spring
昨春[sakushun] last spring
三春[sanshun] three spring months
思春期[shishunki] puberty
春たけなわ[harutakenawa] spring is in full swing

春めく[harumeku] to become spring-like
春一番[haruichiban] first storm of spring
春夏秋冬[shunkashuutou] spring, summer, autumn (fall) and winter
春画[shunga] shunga

杪葉[ureha] end leaves
杪春[byoushun] end of spring
杪秋[byoushuu] end of autumn (fall)

杪冬[byoutou] end of winter
杪欏[hego] Cyathea spinulosa (species of tree fern)
樹杪[jushou] treetop