“Every home with a Tulasi plant is a place of pilgrimage, and no diseases, messengers of Yama, the God of Death, can enter it.”
Skandapurana 2, 4, 8, 13 Padmapurana Uttarakhanda

Wherever the aroma of Tulasi is carried by the wind, it purifies the atmosphere and frees all animals from all baser tendencies.”
Padmapurana, Uttarakhanda

“Vishnu, the Lord of the Three Worlds, takes up abode in the village or the house where Tulasi is grown. In such a house no one suffers calamities like poverty, illness or separations from dear ones.”Padmapurana, Uttarakhanda, 6-24-31-32