The company Holdener Gartenbau GmbH primarily focuses on the planning, design, construction, and maintenance of natural gardens and green spaces. Specific activities include: garden and landscape construction, construction of natural stone walls, swimming ponds, pools, and water features, creation of small structures, biotopes, and ponds, construction of permeable paths, stairs, and squares, natural stone paving or natural stone slabs, custom-made concrete or metal constructions, construction of garden houses and raised beds, construction of natural playgrounds, and maintenance and care of green spaces, including pruning of wild hedges, topiary hedges, flower meadows, and lawns. The company follows a natural approach to designing and maintaining green spaces, emphasizing sustainability and biodiversity.