Palo Azul: What It Is and How to Use It
Palo azul — Spanish for "blue stick" — is the wood of Eysenhardtia polystachya, a shrub native to Mexico and the American Southwest. Simmered in water, it brews into a tea with an almost magical property: it glows blue. Find it in the bulk herb section at William's Natural Foods, 12249 San Pablo Ave, Richmond, CA 94805.
Available in Bulk
We carry palo azul in our bulk herb section, so you can grab the exact amount you want — from a few pieces to try the famous blue tea to a full bag for regular brewing. Our staff can help you find it and explain the traditional preparation.
What We Carry
We stock palo azul as cut wood pieces, the traditional form for simmering into tea, alongside our other bulk roots, barks, and woods for herbal brewing.
Frequently Asked Questions
Why does palo azul tea turn blue?
The wood contains natural fluorescent compounds that dissolve into the water. In daylight the tea looks amber-brown, but held up to light — or viewed against a dark background — it shimmers an unearthly blue. It is pure chemistry, not dye, and it never fails to surprise first-timers.
What does palo azul tea taste like?
Mild and pleasant — lightly woody and earthy with a faint sweetness, nothing like its dramatic color suggests. Most people find it easy to drink plain, and it also takes well to a squeeze of citrus or a little honey.
What is palo azul traditionally used for?
In Mexican herbal tradition, palo azul tea has long been enjoyed as a refreshing daily beverage and traditionally used to support the kidneys and urinary tract. Scientific evidence for specific effects is limited, so enjoy it as a traditional herbal tea.
How do you brew palo azul?
The traditional method is a decoction: simmer the wood pieces in water until the liquid takes on color, then strain. The longer it simmers, the deeper the color and the stronger the blue fluorescence. Let it cool slightly — the blue effect shows best in a clear glass.
Did you know? Palo azul's blue fluorescence comes from natural compounds in the wood — the same kind of light-bending chemistry that makes tonic water glow under blacklight (a phenomenon documented in phytochemistry research on Eysenhardtia species).
Visit William's Natural Foods at 12249 San Pablo Ave, Richmond, CA — open Monday through Friday 9 AM to 7 PM, Saturday 9 AM to 6 PM, and Sunday 10 AM to 5 PM. Our staff are happy to help you find palo azul in the bulk herbs.
This guide is for general information only and is not medical advice. Talk to your doctor or a qualified health professional about any health questions.