Spring’s equinox, known as Nawrūz in Persian, has fascinated humankind for millennia. This article demonstrates symbolism of spring and Nawrūz abounds in Ismaili literature spanning virtually every major historical period and the literary heritage of its three principal linguistic groupings: the Arabic of the Islamic heartlands, the Persian of Iranian and Central Asian traditions, and the various South Asian languages of the Indo-Pakistan subcontinent. Significantly, much of the literature is presented here for the first time as it remains in unpublished manuscripts or in rare works only available in private collections. The article explores the influence of regional traditions that give artistic variety to these literatures. However, it argues that two uniting themes permeate the three broad traditions: vernal phenomena as metaphors for the blessings of the Imam of the time,, secondly, the sacralisation of the earth’s springtide finery as symbols conveying knowledge of a spiritual world beyond sensory experience.