We are having a particularly rainy and windy fall in the Seattle area this year, but don't let that keep you from enjoying the vivid colors of the season. For example, look for two of my favorite trees for fall color: Sweet Gum (Liquidambar styraciflua) and Sourwood (Oxydendrum arboreum).
Native to the eastern US, sweet gums are attractive trees that can grow to 60' tall, 20-25' wide. They are sometimes mistaken for maples because their leaf shape is similar.
In fall, these leaves turn color in multiple shades: burgundy, red and yellow. Certain cultivars, such as 'Festival' and 'Roundiloba' are especially showy with bits of peach and orange mixed in with the purples, reds and yellows. These trees are stunning! If you are fortunate enough to pass one on your daily rounds, watch as the leaves progress through color changes as the days go by. They'll take your mind off the rain.
Sourwoods are also native to the eastern US. They are much smaller than sweet gums, taking several years to reach a height of 20 - 30', making them good trees for urban yards. I don't think they are planted nearly enough here. They are well suited to our acid soils and cool summers.
Sourwood leaves remind me of fruit tree leaves, like apples or peaches. But in fall, unlike the leaves on fruit trees, sourwood leaves turn brilliant red, orange and black-purple. The display is even more of a head-turner because in late summer, and early fall, these trees produce drooping clusters of white, bell-shaped flowers. (They are in the same family, Ericaceae, as the
Strawberry tree.) These flowers make sourwoods easily identifiable this time of year. They are said to be fragrant, so get up close; fall breezes quickly carry the scent away.
In spite of rain and blustery weather, this is a good time to get outside and observe the change of seasons. In the Northwest, we are blessed to have a huge variety of trees with different growth habits. We have longer, more colorful autumns than other parts of the country because as one group of trees fades, another begins to color up. Most years, this means that we have close to three months of color. Enjoy it!
If you live in the city of Seattle and need a good tree guide, consider Arthur Lee Jacobson's "
Trees of Seattle: The Complete Tree-Finder's Guide to the City's 740 Varieties
." This book has become a classic, and for good reason.
