Exhibit 99.1 Hydrofarm Holdings Group Announces First Quarter 2025 Results Restructuring and Cost Savings Initiatives Continue to Yield Substantial Expense Reductions Shoemakersville, PA — May 13, 2025 — Hydrofarm Holdings Group, Inc. ("Hydrofarm" or the "Company") (Nasdaq: HYFM), a leading independent manufacturer and distributor of branded hydroponics equipment and supplies for controlled environment agriculture, today announced financial results for its first quarter ended March 31, 2025. First Quarter H ...