BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Arnold Arboretum - ECPv6.18.2//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://arboretum.harvard.edu
X-WR-CALDESC:Events for Arnold Arboretum
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/New_York
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20250309T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20251102T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20260308T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20261101T060000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20270314T070000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20271107T060000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261108T080000
DTEND;TZID=America/New_York:20261108T093000
DTSTAMP:20260817T191800Z
CREATED:20260817T191757Z
LAST-MODIFIED:20260817T191800Z
UID:10000931-1794124800-1794130200@arboretum.harvard.edu
SUMMARY:Birding at the Arboretum
DESCRIPTION:Have you ever wanted to learn more about the feathered friends you see and hear on a walk through the Arnold Arboretum? If so\, please join birders and volunteers TJ and Allison for a leisurely 90-minute bird watching walk. We will cover a variety of habitats and focus on the changes that seasonal migration brings to our resident birds\, so come back often to keep up with the seasons! No homework is required\, but binoculars are helpful for spotting in the trees. We’re looking forward to birding with you!
URL:https://arboretum.harvard.edu/event/birding-at-the-arboretum-16/
LOCATION:in front of the Hunnewell Building\, 125 Arborway\, Boston\, MA\, 02130\, United States
CATEGORIES:Public Tours,Wildlife
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2025/05/eastern_kingbird.jpg
GEO:42.307205;-71.1206
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=in front of the Hunnewell Building 125 Arborway Boston MA 02130 United States;X-APPLE-RADIUS=500;X-TITLE=125 Arborway:geo:-71.1206,42.307205
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261108T100000
DTEND;TZID=America/New_York:20261108T123000
DTSTAMP:20260817T191837Z
CREATED:20260817T191834Z
LAST-MODIFIED:20260817T191837Z
UID:10000848-1794132000-1794141000@arboretum.harvard.edu
SUMMARY:The Cosmic Tree: A Universal Symbol of Life: Ginkgoes and Conifers
DESCRIPTION:Cosmologies are ways of understanding the nature of the universe\, of experiencing the world in all its variations including the visible and the invisible. Over millennia trees have served as the mythological archetype of the world’s axis (axis mundi)\, the pole through the earth’s center which connects the worlds above and below. Within a cosmic-magical model of the world (imago mundi)\, trees also evolved in various cultures to possess innate spiritual powers or as conduits for communication with the holy or sacred. \n\n\n\nDocent Katrina Scott will lead this interactive tour with stops for moments to reflect on specific trees and the stories associated with them. Were they revered or feared?  A home for deities or tricksters?  We will begin at the Walter Street Gate to visit the oldest ginkgoes at the Arboretum\, then head up the Conifer Path and diverge to walk\, rest\, and reflect among various conifers\, eventually ending by the yews near Bussey Brook and Hemlock Hill Road.  Please wear long pants and closed toe shoes and bring a cloth/towel/mat for sitting/lying down.
URL:https://arboretum.harvard.edu/event/the-cosmic-tree-a-universal-symbol-of-life-ginkgoes-and-conifers-3/
LOCATION:Walter Street Gate\, Walter Street Gate\, Boston\, MA\, United States
CATEGORIES:Horticulture and Botany,Public Tours
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2025/05/cosmic-tree.jpg
GEO:42.2966875;-71.1289375
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Walter Street Gate Walter Street Gate Boston MA United States;X-APPLE-RADIUS=500;X-TITLE=Walter Street Gate:geo:-71.1289375,42.2966875
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261115T120000
DTEND;TZID=America/New_York:20261115T140000
DTSTAMP:20260821T134330Z
CREATED:20260818T165108Z
LAST-MODIFIED:20260821T134330Z
UID:10000925-1794744000-1794751200@arboretum.harvard.edu
SUMMARY:Mushroom Hunt
DESCRIPTION:Hundreds of mushrooms hide beneath the Arboretum’s canopies\, silently blossoming into unique forms then withering away again just as quickly. Join local mushroom enthusiast Maria Pinto to search for these fascinating organisms on the Arboretum grounds\, both edible and poisonous alike. Along the way you will learn what mushrooms to look for in different habitats and seasons\, how they move through ecosystems\, and what the Arboretum’s unique collections affect what mushrooms you might find here. \n\n\n\nAccessibility: Participants will need to navigate woodchip\, gravel\, and dirt paths\, and climb moderate hills (Hemlock Hill\, specifically). \n\n\n\nAudience: This program is geared towards adults. \n\n\n\nInclement weather policy: Participants will be notified via email at least one day in advance if a program needs to be cancelled due to inclement weather\, and will be notified by phone if a program must be cancelled with less one day’s notice. Click here to view our full inclement weather policy. If you have questions about the status of a program\, please email publicprograms@arnarb.harvard.edu (inbox monitored on weekdays) or call the Visitor Center desk between 10:00am and 4:00pm at (617) 384-5209.
URL:https://arboretum.harvard.edu/event/mushroom-hunt-7/
LOCATION:Flora Way Gate (Formerly Bussey St Gate)\, Bussey Street Gate\, Boston\, MA\, United States
CATEGORIES:Horticulture and Botany,Walk
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2025/05/Oyster-mushroom.jpg
GEO:42.2964125;-71.1280781
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Flora Way Gate (Formerly Bussey St Gate) Bussey Street Gate Boston MA United States;X-APPLE-RADIUS=500;X-TITLE=Bussey Street Gate:geo:-71.1280781,42.2964125
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261117T140000
DTEND;TZID=America/New_York:20261117T150000
DTSTAMP:20260818T170845Z
CREATED:20260818T165120Z
LAST-MODIFIED:20260818T170845Z
UID:10000926-1794924000-1794927600@arboretum.harvard.edu
SUMMARY:Sustainability Spotlight: Geothermal Heating at Weld Hill
DESCRIPTION:This is a members-only program. Not a member? Click here to join. \n\n\n\nDid you know that the Weld Hill Research Building at the Arboretum has the largest geothermal heating system at Harvard? There are 88 wells hidden under the namesake hill which help heat and cool the state-of-the-art research building. Join Head of Operations and Project Management Danny Schissler for a behind-the-scenes look at this fascinating system. \n\n\n\nThis tour will be a mix of indoors and outdoors. \n\n\n\nAccessibility: This program involves walking short distances. \n\n\n\nAudience: This members-only program is geared towards adults. \n\n\n\nInclement weather policy: Participants will be notified via email at least one day in advance if a program needs to be cancelled due to inclement weather\, and will be notified by phone if a program must be cancelled with less one day’s notice. Click here to view our full inclement weather policy. If you have questions about the status of a program\, please email publicprograms@arnarb.harvard.edu (inbox monitored on weekdays) or call the Visitor Center desk between 10:00am and 4:00pm at (617) 384-5209.
URL:https://arboretum.harvard.edu/event/sustainability-spotlight-geothermal-heating-at-weld-hill/
LOCATION:Weld Hill Research Building\, 1300 Centre Street\, Boston\, MA\, 02131\, United States
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2026/08/Sustainability-Spotlight-Geothermal-Heat-Pumps.jpg
GEO:42.2960125;-71.1330781
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Weld Hill Research Building 1300 Centre Street Boston MA 02131 United States;X-APPLE-RADIUS=500;X-TITLE=1300 Centre Street:geo:-71.1330781,42.2960125
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261121T160000
DTEND;TZID=America/New_York:20261121T170000
DTSTAMP:20260821T134419Z
CREATED:20260818T165138Z
LAST-MODIFIED:20260821T134419Z
UID:10000927-1795276800-1795280400@arboretum.harvard.edu
SUMMARY:Owl Prowl
DESCRIPTION:Dusk is a perfect time to look and listen for Great Horned Owls\, often heard calling throughout the Arboretum’s collections. Join Arboretum Horticulturist Brendan Keegan and Matt Kamm\, Associate Director of Field Conservation at Zoo New England\, to hear about the owls’ breeding and nesting behavior\, learn how to go owling ethically\, and possibly hear and see a few owls as well. \n\n\n\nPlease note that we have the best chance of seeing owls if the group is calm and quiet\, so get your chatting out before the walk starts! \n\n\n\nAccessibility: Participants will walk over paved roads\, woodchip paths\, mowed grass\, and off-path terrain. \n\n\n\nAudience: This program is geared towards adults. \n\n\n\nInclement weather policy: Participants will be notified via email at least one day in advance if a program needs to be cancelled due to inclement weather\, and will be notified by phone if a program must be cancelled with less one day’s notice. Click here to view our full inclement weather policy. If you have questions about the status of a program\, please email publicprograms@arnarb.harvard.edu (inbox monitored on weekdays) or call the Visitor Center desk between 10:00am and 4:00pm at (617) 384-5209.
URL:https://arboretum.harvard.edu/event/owl-prowl/
LOCATION:Flora Way Gate (Formerly Bussey St Gate)\, Bussey Street Gate\, Boston\, MA\, United States
CATEGORIES:Walk,Wildlife
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2025/05/Owl-Observations-scaled.jpeg
GEO:42.2964125;-71.1280781
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Flora Way Gate (Formerly Bussey St Gate) Bussey Street Gate Boston MA United States;X-APPLE-RADIUS=500;X-TITLE=Bussey Street Gate:geo:-71.1280781,42.2964125
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20261122T140000
DTEND;TZID=America/New_York:20261122T151500
DTSTAMP:20260821T134500Z
CREATED:20260818T165150Z
LAST-MODIFIED:20260821T134500Z
UID:10000928-1795356000-1795360500@arboretum.harvard.edu
SUMMARY:The Regal Lily and the Redemption of E.H. Wilson
DESCRIPTION:Join Keeper of the Living Collections for a story of a flower and the early 20th Century explorer who ventured to the other side of the world\, away from family and modern convenience\, to collect it. The regal lily (Lilium regale) was not just an object of desire but one of such value that it would underwrite one of the most significant collecting expeditions of the day. Yet\, its beauty almost betrayed the collector\, nearly taking both his reputation and his life. \n\n\n\nThis is an indoor talk in the Hunnewell Lecture Hall. \n\n\n\nAccessibility: The Hunnewell Lecture Hall is wheelchair accessible. \n\n\n\nAudience: This program is geared towards adults. \n\n\n\nInclement weather policy: Participants will be notified via email at least one day in advance if a program needs to be cancelled due to inclement weather\, and will be notified by phone if a program must be cancelled with less one day’s notice. Click here to view our full inclement weather policy. If you have questions about the status of a program\, please email publicprograms@arnarb.harvard.edu (inbox monitored on weekdays) or call the Visitor Center desk between 10:00am and 4:00pm at (617) 384-5209.
URL:https://arboretum.harvard.edu/event/the-regal-lily-and-the-redemption-of-e-h-wilson/
LOCATION:Hunnewell Lecture Hall\, 125 Arborway\, Boston\, MA\, 02130\, United States
CATEGORIES:Horticulture and Botany,Lecture
ATTACH;FMTTYPE=image/jpeg:https://arboretum.harvard.edu/wp-content/uploads/2026/08/Regal-Lily.jpg
GEO:42.3073125;-71.1208125
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Hunnewell Lecture Hall 125 Arborway Boston MA 02130 United States;X-APPLE-RADIUS=500;X-TITLE=125 Arborway:geo:-71.1208125,42.3073125
END:VEVENT
END:VCALENDAR