Certification Indicates a Company’s Standard of Care
Don’t trust your trees to just anyone

Certification mean that you can be assured you are hiring a professional, ethical tree care company which has to abide by strict guidelines enforced by professional organizations that takes pride in quality and service. Hansen’s is committed to providing only the best in quality care and ensuring the health and safety of its workers and its products.

ISA Certified
Hansen's takes employee training and safety seriously. Hansen’s employs 11 International Society of Arboriculture-certified arborists, making the company one of the most accredited tree service companies in the St. Louis area. The International Society of Arboriculture is a worldwide professional organization dedicated to fostering a greater appreciation for trees and to promoting research, technology, and the professional practice of arboriculture. To maintain certification, each arborist must accumulate 30 units of continuing education every three years.

STA Certified
Hansen’s compost is STA-certified, which means it follows the U.S. Seal of Testing Assurance Program, the only program that certifies the quality of compost. In order to hold this certification, Hansen’s compost products undergo regular testing offer technical data and test results to customers. The test guidelines ensure the product contains the proper nutrients for optimum plant growth.

TCIA Certified
In 2005, Hansen’s was the first tree-care company in the state certified by the Tree Care Industry Association. TCIA develops safety and education programs, standards of tree care practice, and management information for arboriculture firms around the world. By using a TCIA-certified company, consumers can be assured of hiring a professional, ethical tree care company that has been inspected by TCIA for proper business practices, professional employees, quality service and customer satisfaction.

BBB Certified
Hansen’s is an accredited member of the Better Business Bureau. The BBB is an international business organization dedicated to the ethical practice of companies, setting standards for marketplace trust, encouraging best practices and denouncing substandard marketplace behavior.