1. Monty Don – Monty Don is a British gardener, writer, and television presenter who is known for his informative and engaging shows on gardening, garden design, and outdoor landscaping. He has also authored several popular books on gardening.

2. Jamie Durie – Jamie Durie is a landscape designer, horticulturist, and television host from Australia. He is best known for his work on the television series “The Outdoor Room,” in which he created stunning outdoor areas and gardens for clients.

3. Martha Stewart – Martha Stewart is a lifestyle guru, author, and television personality who has long been associated with gardening and outdoor living. Her expertise in gardening and garden design spans a wide range of styles and techniques, and she has authored numerous books on the subject.

4. Christopher Lloyd – Christopher Lloyd was a British gardener, writer, and garden designer who was widely regarded as one of the greatest gardeners of the 20th century. He is best known for his work at the Great Dixter estate in East Sussex, England.

5. Piet Oudolf – Piet Oudolf is a Dutch garden designer who is known for his naturalistic approach to garden design. He is perhaps best known for his work on the High Line in New York City, which he designed in collaboration with James Corner.

6. Alan Titchmarsh – Alan Titchmarsh is a British gardener, writer, and television presenter who has been a fixture on British television for decades. He is known for his friendly and approachable approach to gardening and garden design, and has authored numerous books on the subject.

7. Dan Pearson – Dan Pearson is a British garden designer, writer, and television presenter who is known for his innovative and naturalistic approach to garden design. He has won numerous awards for his work, and is widely regarded as one of the most influential garden designers of his generation.

8. Bunny Guinness – Bunny Guinness is a British garden designer, writer, and television presenter who is known for her eclectic and imaginative approach to garden design. She has been a regular contributor to numerous gardening magazines and television shows, and is the author of several books on gardening and garden design.

9. James Wong – James Wong is a British botanist, gardener, and television presenter who is known for his innovative and sustainable approach to gardening and garden design. He has authored numerous books on the subject, and is a regular contributor to gardening magazines and television shows.

10. Sarah Raven – Sarah Raven is a British gardener, writer, and television presenter who is known for her creative and stylish approach to garden design. She has authored several popular books on gardening, and is a regular contributor to gardening magazines and television shows.