Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Length of the Oak Pollen Season
Name: Barbara
Grade: N/A
Location: N/A
Country: N/A
Date: N/A

I'd like to ask a botanist a simple question (I think), but one which hours of web searching hasn't clearly answered so far. How long do pollen seasons (specifically live oak) last? I'd always heard the cycles were about 6 weeks long. Where I live (Austin, Tx), our oak season usually starts in early to mid-March and is done by early May. Imagine my surprise to see oak pollen registering in pretty high numbers since mid-February this year. We have been in a drought if that makes a difference. Logic tells me that if it starts early one year, it would therefore end early? Am I correct in this assumption? I'd deeply appreciate any clarification you could give me on this question.

Live oak refers to a number of different species.

e.g., Quercus fusiformis, which is noted as flowering in "spring" but can be variable.

Anthony Brach Ph.D.

Click here to return to the Botany Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory