Seasonal Bloom Calendar

Seasonal Bloom Calendar

Formal Gardens, Merion

Whether it is the cherry blossoms of late March, the magnolias in April, June’s climbing hydrangeas, or fall’s late bloomers, the sights in the Arboretum are constantly changing. Consult the seasonal blooms calendar to make the most of your visit. After all, you wouldn’t want to be late for the lilacs.


With witch-hazel in bloom and ripe fruit on many branches, the Arboretum is ready for the season. The trees changing into their autumn hues complete the gardens’ fall feeling.  Learn more


While the vast majority of plants and trees in the Arboretum are dormant in the winter months, there are a rare few that prefer such chilly climes. True to their names, wintersweet and winter jasmine are in bloom. Learn more


It’s the time of year when the snow melts and the world seems awash in color. Showstopping magnolias are just the beginning; learn more about all the fragrant and colorful blooms you can discover this spring.  Learn more


Everything is coming up roses in these hot summer months. Also, look for the magenta flash of azaleas and the bobbing blue heads of hydrangeas. Learn more