Ṛtusaṃhāra often written Ritusamhara, (Devanagari: ऋतुसंहार; ऋतु ṛtu, "season"; संहार saṃhāra, "compilation") is a long poem or mini-epic in Sanskrit by Kalidasa. The poem has six cantos for the six Indian seasons - grīṣma (summer), varṣā (monsoon/rains), śarat (autumn), hemanta (cool), śiśira (winter), and vasanta (spring). It is generally considered to be Kaldiasa's earliest work.
The word saṃhāra is used here in the sense of "coming together" or "group". It is often translated as Medley of Seasons or Garland of Seasons, but also mistranslated as "birth and death" of seasons, which arises from the alternate meaning of samhāra as destruction.
The changing seasons are depicted against the thematic backdrop of how lovers react to the landscape. This imbues the poem with a strong strand of erotic love (shringara) rasa. The predominant emphasis on a single rasa has been criticized as not living up to the standards of Kalidasa as mahākavi (great poet), with these "lapses" being attributed to the poet's immaturity. Sometimes even his authorship has been challenged on the grounds of weak poetic imagination.