Unfortunately, as an AI language model, I do not have access to the internet to verify the accuracy of information or sources. However, I can provide a general summary about Greentree Park based on the information available in my database.

Greentree Park is a family-friendly park located in Beaverton, Oregon. It is known for its serene walking trails and beautiful scenery. The park features a 0.8-mile loop trail that is ideal for hiking, biking, and jogging. Visitors can also enjoy a variety of outdoor activities such as picnicking, playing sports, and birdwatching.

One of the highlight attractions of Greentree Park is the beautiful natural spring that flows through the park. The spring is a popular spot for visitors to relax, take pictures, and enjoy the peaceful sound of flowing water.

Another notable feature of the park is the playground area, which is designed for children to climb, swing, and play. The park also has a basketball court, a volleyball court, and a baseball field for sports enthusiasts.

The best time to visit Greentree Park is during the spring and summer months when the weather is warm and sunny. Visitors can enjoy the park's lush greenery and scenic views during this time of year.

In summary, Greentree Park is a must-visit destination for nature lovers and outdoor enthusiasts. Whether you're looking for a peaceful place to relax or an adventurous place to explore, Greentree Park has something for everyone.