Bhagavad Gita 15.13 — God sustains earth and plants

गामाविश्य च भूतानि धारयाम्यहमोजसा। पुष्णामि चौषधीः सर्वाः सोमो भूत्वा रसात्मकः ॥

gāmāviśya ca bhūtāni dhārayāmyahamojasā | puṣṇāmi cauṣadhīḥ sarvāḥ somo bhūtvā rasātmakaḥ ||

Meaning

Entering the earth, I hold up all beings with My energy; and becoming the moon full of nectar, I nourish all plants.