Understanding Oaks: a Tree Walk and Talk with Alison Lancaster — October 24, 2026
Description
Join us in the TPF gardens this Fall with Los Angeles consulting arborist Alison Lancaster for our Oak-tober Series! She’ll guide us through evaluations of some oak trees on the grounds to help us identify and understand:
Maintenance, such as drought-conscious watering
Common structural issues that could make tree or branch failures more likely
Oak tree life cycle, including fire adaptation, growth patterns, habitat value
Young tree structural pruning versus mature tree safety pruning
Non-harmful, native insects that use oaks as habitat, versus destructive, invasive pests that damage oaks
Diseases that cause health and structural problems in oaks
This will be a walk-and-talk presentation with time for discussion, so feel free to bring photos and questions about your own oaks at home. A great class for anyone wanting to learn more about this important California keystone species.
Resources:
Oaks in the Urban Landscape by Larry Costello, Bruce Hagen, Katherine Jones – UC ANR
The Nature of Oaks by Douglas Tallamy
Alison Lancaster has been a consulting arborist in Southern California since 2016. She focuses her work on helping Angelenos act as thoughtful and responsible stewards of their trees. She has an AS in Wildland Resources and Forestry from Citrus College and a BA in Political Science from UC Irvine. She began her career as an intern at City of Pasadena Urban Forestry, then transitioned to training and working as a consultant for five years before opening her own business. Since then she has earned her Registered Consulting Arborist qualification, was elected to the Western Chapter ISA Board of Directors, and received the 2019 WCISA Young Professional Award.
Find her at alca-llc.com
📅 Refund Policy: Refunds are available up to seven days before the event. Within seven days, refunds and credits are no longer available, as this helps us plan responsibly and support our instructors. Thank you for your understanding.
FAQs
- What is your refund policy?
Refund Policy
Refunds are available up to seven days before the event.
Within seven days, refunds and credits are no longer available, as this helps us plan responsibly and support our instructors.Thank you for your understanding.
If the event is more than seven days away:
Open the order confirmation email you received after buying your ticket.
Click manage order.
Go to the refund/cancel tab.
Select the tickets you want to refund.
Click review > confirm to submit the refund.
You’ll receive a confirmation email. Refunds usually return to the original payment method in 2–5 business days.
🎟️ Enrollment Threshold for Classes: We require a minimum of five participants for a class to run; when enrollment falls below that number, we may need to cancel the class in order to responsibly cover program costs and maintain an engaging experience for those attending. If this happens we will refund the ticket price. We are not able to refund credit card charges.
- I'm a member. How do I find my code?
Your discount code is in the email you received when you purchased your membership.
If you cannot find the email, please contact programs@theodorepayne.org and allow 2-3 business days for a response. We receive a very high volume of email.
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- What if it rains?
Rain or Shine Policy
Our classes generally take place rain or shine. We do not cancel classes simply because rain is forecast; however, the safety of our students, instructors, and staff comes first. In the event of severe weather or unsafe conditions, we will evaluate the situation on a case-by-case basis and may modify, relocate, postpone, or cancel a class. If TPF cancels or postpones a class due to weather, registered participants will be notified as soon as possible and offered a refund or the option to transfer their registration to a rescheduled date when available.
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