{"slug":"arboretum-detroit","name":"Arboretum Detroit","tagline":"Turns vacant Detroit lots into groves of trees, with volunteer planting days","description":"Arboretum Detroit plants groves on abandoned lots in the city's east side and cares for them as a public arboretum, so that people can see many kinds of trees grown to their full form. Volunteers plant and tend the lots on scheduled days, and the events page lists walks and workdays.","website_url":"https://www.arbdetroit.org","tier":"listed","resident_offers":["volunteer","education"],"listed_source_url":"https://www.arbdetroit.org","logo_url":null,"founded_year":null,"org_type":"nonprofit","scope":"local","headquarters":{"city":"Detroit","region":"Michigan","country":"US","lat":42.331,"lng":-83.046},"volunteer_url":"https://www.arbdetroit.org/volunteer","donation_url":"https://www.arbdetroit.org/donate","events_url":"https://www.arbdetroit.org/events","featured":false,"trees_on_record":0,"primary_activity":"urban-forestry","activities":[{"slug":"urban-forestry","name":"Urban forestry","primary":true},{"slug":"education-advocacy","name":"Education & advocacy","primary":false}],"updated_at":"2026-11-08T02:21:52.718Z","url":"https://treerm.org/org/arboretum-detroit","markdown_url":"https://treerm.org/org/arboretum-detroit.md","api_url":"https://treerm.org/api/v1/organizations/arboretum-detroit","data_note":null,"derived":{"annual_trees":[],"latest_annual":null,"yoy":null,"cagr":null,"dollars_raised_per_tree":null,"cost_per_tree":null,"trees_per_volunteer":null,"survival":null,"hectares":null,"transparency":{"score":0,"label":"Opaque","points":[{"key":"annual","label":"Publishes annual tree figures","earned":0,"max":20,"why":"No year-by-year figures found"},{"key":"recent","label":"Figures are recent","earned":0,"max":15,"why":"No dated annual figure"},{"key":"sourced","label":"Every figure has a public source","earned":0,"max":10,"why":"No figures on record"},{"key":"money","label":"Publishes financials or cost per tree","earned":0,"max":15,"why":"No financial figure on record"},{"key":"survival","label":"Reports survival or monitoring","earned":0,"max":15,"why":"No survival or monitoring figure on record"},{"key":"verified","label":"Independently verified figure","earned":0,"max":10,"why":"Every figure is the organization's own count"},{"key":"programs","label":"Breaks figures down by program","earned":0,"max":10,"why":"No program breakdown"},{"key":"people","label":"Reports volunteers or events","earned":0,"max":5,"why":"No volunteer figures or events on record"}]},"methodology":"https://treerm.org/methodology"},"countries":["US"],"social_links":{"instagram":"https://www.instagram.com/arbdetroit","facebook":"https://www.facebook.com/arboretumdetroit/"},"programs":[],"metrics":[],"upcoming_events":[],"license":"CC-BY-4.0"}