Horticulturists know how to help plants thrive. Through education and on-the-job training, they learn how to apply scientific knowledge to maximize plant growth and health through techniques like irrigation, plant genetics, and pest management.

The purpose of gardening intensively is to harvest the most produce possible from a given space. More traditional gardens consist of long, single rows of vegetables spaced widely apart. Much of the garden area is taken by the space between the rows. An intensive garden minimizes wasted space.

Professional gardeners have extensive knowledge about plants, pests, lawns, soil and ecology. They can instantly spot the difference between a plant and a weed.

What is high density or intensive gardening? It is growing individual plants close together, following the minimum spacing recommendations listed on the seed packet.