Reliably Austin
Play Live Radio
Next Up:
0:00 0:00
Available On Air Stations
Streaming troubles? We've made changes. Please click here on for more information.
For this project, we ask you what you want us to investigate and what stories you'd like us to tell.

Why Are Austin's Trees Having Such A Colorful Autumn?

Gabriel C. Pérez/KUT
The downtown skyline and fall foliage colors in South Austin on November 26, 2018.

Austin is known for a lot of things, but fall foliage is not one of them. That is, until this year. 

Local trees are putting on an incredible color show lately. It seems like it came out of nowhere, but it didn’t.

“This is my 24th fall in Austin, and I've never seen the tree color as varied and vibrant as it is this year,” Doug Addison wrote to KUT's ATXplained project, asking: "Why? Or is it my imagination?"

It's not your imagination, Doug.

Credit Mose Buchele / KUT
Doug Addison says in 24 years he can't remember ever seeing fall colors this beautiful in Austin.

It turns out there are three ingredients that went into making 2018 the best fall foliage year in recent memory: water, cold, and tree diversity.

RELATED | Your Best Photos Of Austin's Brilliant Fall Foliage


In September and October, Austin got almost 16 inches of rain. That’s well above average, according to April Rose, the Urban Forest Health Coordinator for the City of Austin.

“Our trees were very well-nourished with water,” she said. “That definitely helped them retain their leaves well into the fall, when some of their leaves may already have been dropping.”

Without getting too deep into the science, more leaves stayed on trees to see shorter days and cooler temperatures. Those are two things that trigger those brilliant fall colors.

RELATED | Subscribe to the ATXplained podcast on iTunes or Google Play


Our cooler-than-average September and October helped, too.

“It’s been cooler for a long duration without a really heavy frost,” says Rose. “So it’s given the trees a chance for the [green] pigment to really break down and allow the other, subtler pigments that we don’t normally see to shine through.”

But different leaves react differently to the cold. That’s where our final ingredient — tree diversity — comes in.

Fall foliage colors in South Austin on Nov. 26, 2018.
Credit Gabriel C. Pérez/KUT
Fall foliage colors in South Austin on November 26, 2018.

Tree Diversity

Over the years, Austin’s urban tree canopy has become much more varied in the different types of trees it contains. Part of that is intentional — the city plants different kinds of trees to prevent species-specific diseases from doing too much damage. 

But, it also means good fall foliage conditions bring lots of different colors than Austinites normally see.

“It just seems like all over town, all the trees are getting in on the act,” says our question-asker Doug Addison.

“I look at trees all day every day and I am also overwhelmed this year by the brilliance and diversity of colors,” says April Rose. “It’s very spectacular this year.”


Mose Buchele focuses on energy and environmental reporting at KUT. Got a tip? Email him at Follow him on Twitter @mosebuchele.
Related Content