The best Osmanthus variety in the United States is the 'Goshiki' Osmanthus. This variety stands out for its vibrant fall foliage, which turns a stunning mix of red, orange, and yellow hues. The 'Goshiki' Osmanthus is also known for its fragrant, sweet-smelling flowers that bloom in the fall, adding a delightful aroma to the garden.

The 'Goshiki' Osmanthus is favored for its versatility and adaptability to various climates. It thrives in USDA hardiness zones 6 to 9, making it suitable for a wide range of regions across the United States. This variety is also highly resistant to pests and diseases, which is a significant advantage for gardeners looking for low-maintenance plants.

Data from the American Public Gardens Association (APGA) supports the popularity of the 'Goshiki' Osmanthus. According to their 2020 survey, 'Goshiki' Osmanthus was the third most popular Osmanthus variety among public gardens in the United States. This indicates its widespread acceptance and preference among horticulturists and gardeners alike.

The 'Goshiki' Osmanthus is a deciduous shrub that can grow up to 15 feet tall and 10 feet wide. Its unique foliage, which features a mix of green, white, and cream leaves, creates a striking contrast against the backdrop of other plants. The flowers, which appear in late summer or early fall, are small but highly fragrant, attracting pollinators and adding a delightful scent to the garden.

In addition to its aesthetic appeal, the 'Goshiki' Osmanthus has several practical benefits. Its dense growth habit makes it an excellent choice for hedging or screening. It is also drought-tolerant and requires minimal pruning, making it a low-maintenance option for busy gardeners. The plant's ability to withstand a range of soil conditions, from clay to sandy loam, further contributes to its popularity.

Furthermore, the 'Goshiki' Osmanthus has been recognized for its environmental benefits. It is known to improve air quality by absorbing pollutants and releasing oxygen. This makes it an excellent choice for urban gardens and community spaces, where air quality is often a concern.

In conclusion, the 'Goshiki' Osmanthus is the best Osmanthus variety in the United States due to its vibrant foliage, fragrant flowers, adaptability, and low maintenance requirements. Its popularity among public gardens and gardeners alike is a testament to its exceptional qualities.