Tulsi is considered a favorite plant of Lord Vishnu. According to scriptures, offering Tulsi to the Shivling can anger Lord Shiva.

While turmeric is considered auspicious, it is prohibited to offer turmeric on the Shivling.

Although coconut is offered to Lord Shiva, it is advised to avoid pouring coconut water on the Shivling.

Honey is considered nectar, but it should be avoided when offering to the Shivling.

Marigold flowers are offered to Lord Vishnu, so they should be avoided when offering to the Shivling.

Kumkum is applied to the forehead, but it should be avoided when offering to the Shivling.