Tulsi Vivah is the symbolic wedding of the household Tulsi plant (Vrinda) and Vishnu (as Shaligram, an amla branch, or a Krishna murti) — held in the Kartik month, once Vishnu wakes from yogic sleep at the end of Chaturmas. It falls on one evening within the window from Kartik Shukla Ekadashi to Purnima, most commonly on Dwadashi — since Ekadashi itself is a fasting day, the wedding shifted to Dwadashi or later. This year (2026): Saturday, 21 November (Kartik Shukla Dwadashi), with the window running to 24 November (Kartik Purnima). This marks the opening of the Hindu wedding season; performing Tulsi Vivah is regarded as equal in merit to giving away a daughter in marriage (kanyadaan).
Vishnu, who goes into yogic sleep on Ashadhi Ekadashi, wakes on Kartiki (Prabodhini) Ekadashi; auspicious ceremonies resume once Tulsi Vivah is performed after that. The festival is also read as marking the end of the monsoon and the start of the wedding season — by popular belief, human weddings are held only after Tulsi Vivah, not during Chaturmas.
Dressing Tulsi as a bride and marrying her to Vishnu is regarded as equal to performing kanyadaan (giving away a daughter) in one's household — couples without a daughter, in particular, take on the role of Tulsi's "parents" for the ceremony. Tulsi is held to be extremely sacred and purifying — by tradition, an offering to Vishnu isn't considered complete without a tulsi leaf on it.
Tulsi was, in a former life, Vrinda — an intensely devoted wife married to the powerful demon Jalandhar. The strength of Vrinda's chastity made Jalandhar invincible — the gods could not defeat him. They turn to Vishnu for help; to protect the gods, Vishnu breaks Vrinda's chastity, and only then is Jalandhar killed in battle. On learning the truth, Vrinda curses Vishnu; in the end, she herself remains as the Tulsi plant, and Vishnu as the Shaligram (a sacred stone) — which is why, every Kartik, the wedding of Tulsi and Shaligram is performed.
Versions diverge on the details — in some, Vishnu first appears as a sage announcing "your husband has died," then takes Jalandhar's form to break Vrinda's chastity; in Marathi retellings, Vishnu goes straight to the palace in Jalandhar's form, and the moment Vrinda stops her worship to touch his feet, her vow is broken. The ending differs too — in some versions Vrinda immolates herself (sati) and Tulsi grows from her ashes; in others she simply transforms into the Tulsi plant. Even the number of curses varies by version — some tell of a single curse (turning to stone), others of two (a curse of separation, in addition to the stone curse).
One tradition holds that Tulsi is itself a form of Lakshmi (as Vrinda); but many other traditions hold Vrinda (Jalandhar's wife) to be distinct from Lakshmi — some versions even have Lakshmi regard Jalandhar as a brother. Tulsi's identity shifts by devotional tradition. So "Tulsi is Lakshmi" is presented here as one tradition's view, not a universal fact.
Householders — women in particular — perform the wedding in front of the household Tulsi Vrindavan in the courtyard. Couples without a daughter often take on the symbolic role of Tulsi's parents and perform the kanyadaan, bearing the ceremony's cost as custom holds. For Vaishnavs, Warkaris, and devotees of Vishnu generally, the Tulsi-Shaligram wedding is regarded as part of devotion to Vishnu.
The exact sequence varies by tradition and region — follow your family's and local custom.
The auspicious clock-time (pradosh/muhurat) for the wedding varies by city — check the day page; no specific clock time is given here.
Tulsi Vrindavan (freshly painted), sugarcane stalks, mango leaves and banana-tree trunks (for the mandap), marigold flowers and garlands, a white antarpat cloth, a sari-dupatta-jewellery-sindoor-haldi-kumkum set for Tulsi, a Shaligram/Krishna murti or amla branch with cloth-sandalwood-sacred thread for the groom, akshata (sindoor-tinted rice), a kalash with Ganga water, a lamp or oil-lamps, rangoli colours, and prasad (sugarcane, coconut, fruit, groundnuts).
Tulsi Vivah itself carries no separate fast — it's a celebration, not a vrat day. The fasting belongs to Prabodhini Ekadashi, the day before. Those observing the Ekadashi fast break it (parana) at the proper time on Dwadashi and then perform Tulsi Vivah — which is also why the wedding is generally held on Dwadashi rather than Ekadashi itself.
The mangalashtak (auspicious verses) recited during the ceremony form the heart of the ritual — they're chanted while the antarpat is held, at the ceremony's central moment, right before the "Savadhan" call and the throwing of akshata (see the puja vidhi above); Tulsi's aarti is also performed. The exact wording of traditional mangalashtak varies by tradition, and modern compiled versions can carry their own copyright, so the full text isn't given here.
In North and East India, the same festival is known as "Dev Uthani/Devotthan Ekadashi" — but the antarpat-mangalashtak-sugarcane form described here is the Maharashtrian flavour, not presented as a pan-India custom.