Olea europaea 'Wilsoni', commonly known as Fruitless Olive, is an evergreen tree highly valued for its attractive foliage, exceptional hardiness, and lack of fruit. The plant is a cultivar of the Mediterranean Olive tree and is widely grown in many parts of the world for ornamental purposes.

'Wilsoni' typically grows to a height of 8-10 meters and has a round, spreading canopy. Its branches are densely covered with small, gray-green leaves that are slow-growing and tend to retain their color throughout the year, making it a popular choice for landscaping and garden design. The shrub's small size and compact growth habit make it an excellent choice for use in small gardens, on patios, or in containers.

One of the most attractive features of 'Wilsoni' is its exceptional hardiness and tolerance for a wide range of growing conditions. It is also highly disease resistant and low maintenance, making it a popular choice for a wide range of landscaping and garden design applications. It is ideal for use as a specimen tree, hedge, screen, or accent plant.

'Wilsoni' is a fruitless variety of olive tree, which means that it does not produce fruit. This makes it an excellent choice for those who want to enjoy the beauty of an olive tree without the mess of fallen fruit. It is also non-allergenic, making it a good choice for those with allergies.

Overall, Olea europaea 'Wilsoni' is a highly desirable and versatile tree that is sure to add beauty, interest, and practical value to any outdoor space. Its attractive foliage, exceptional hardiness, and lack of fruit make it an excellent choice for a wide range of garden design styles and applications.