The Erukku plant (Calotropis), deeply associated with Lord Shiva, holds immense spiritual and medicinal significance in Hindu tradition. Believed to have originated from a drop of the deadly Kalakuta poison that spilled during the churning of the ocean (Palazhi Madhanam), this unique plant symbolizes the duality of destruction and protection, mirroring the essence of Lord Shiva himself.
Despite its toxic nature, the Erukku plant is highly revered in Ayurveda and Siddha medicine after undergoing proper purification processes. Offering its flowers during auspicious days like Shivaratri, Pradosham, and Thiruvathira is believed to bring prosperity and fulfill the wishes of devotees. Additionally, offering garlands made of Karuka on the root of the Erukku plant to Lord Ganesha is believed to remove all life obstacles, while the white variety (Shwetarka) is considered highly effective in warding off negative energies.
According to Vastu Shastra, planting white Erukku at home brings peace and positive energy, provided specific placement rules are followed. It should never be planted directly in front of the main entrance or in the center of the courtyard, nor should it be placed in the South or South-West corners. Instead, it should be planted near the boundary in the North, East, or North-East directions. Extreme caution must also be exercised when handling the plant, as its milky sap is highly dangerous to the eyes and must be kept away from children and pets.