Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 8
अहो प्रजापतिपतिर्भगवान् हरिरव्यय: ।वनस्पतीनोषधीश्च ससर्जोर्जमिषं विभु: ॥ ८ ॥
aho prajāpati-patirbhagavān harir avyayaḥvanaspatīn oṣadhīś casasarjorjam iṣaṁ vibhuḥ
The Supreme Personality of Godhead, Śrī Hari, is the master of all living entities, including all the prajāpatis, such as Lord Brahmā. Because He is the all-pervading and indestructible master, He has created all these trees and vegetables as eatables for other living entities.
Soma, the predominating deity of the moon, reminded the Pracetās that this vegetation had been created by the Lord of lords to provide food for everyone. If the Pracetās tried to kill them off, their own subjects would also suffer, for trees are also required for food.