I made me gardens and orchards, and I planted trees in them of all kind of fruits:

Jamieson-Fausset-Brown Bible Commentary

5. gardens-Hebrew, "paradises," a foreign word; Sanskrit, "a place enclosed with a wall"; Armenian and Arabic, "a pleasure ground with flowers and shrubs near the king's house, or castle." An earthly paradise can never make up for the want of the heavenly (Re 2:7).

Matthew Henry's Concise Commentary

2:1-11 Solomon soon found mirth and pleasure to be vanity. What does noisy, flashy mirth towards making a man happy? The manifold devices of men's hearts, to get satisfaction from the world, and their changing from one thing to another, are like the restlessness of a man in a fever. Perceiving it was folly to give himself to wine, he next tried the costly amusements of princes. The poor, when they read such a description, are ready to feel discontent. But the remedy against all such feelings is in the estimate of it all by the owner himself. All was vanity and vexation of spirit: and the same things would yield the same result to us, as to Solomon. Having food and raiment, let us therewith be content. His wisdom remained with him; a strong understanding, with great human knowledge. But every earthly pleasure, when unconnected with better blessings, leaves the mind as eager and unsatisfied as before. Happiness arises not from the situation in which we are placed. It is only through Jesus Christ that final blessedness can be attained.