Hesi is a Dutch plant nutrition brand developing fertilizers and supplements for indoor and outdoor cultivation. Its range covers soil, coco, and hydroponic growing, with dedicated nutrient programs for different growing media and stages of plant development. The brand is particularly known for its straightforward feeding approach, combining base nutrients with root, growth, and flowering supplements in easy-to-follow cultivation schedules. Hesi products are designed to support plant nutrition from early root development through flowering, offering accessible feeding solutions for home growers using traditional substrates as well as soilless and hydroponic systems.