Data sources

Where the plant names, descriptions, and photos in Twigged come from, and how we credit them.

Twigged aggregates plant data from several open and commercial sources. Every plant in our database is tagged with the source or sources it came from, and every image stored on a plant page carries the photographer credit and licence returned by the source API. Below are the projects we rely on and the licences their data is made available under.

World Checklist of Vascular Plants (WCVP)

Scientific names, family and genus classification, lifeform, and native-range information come from the World Checklist of Vascular Plants maintained by the Royal Botanic Gardens, Kew. WCVP is published under the Creative Commons Attribution 4.0 International licence (CC BY 4.0).

Credit: “The World Checklist of Vascular Plants”, Royal Botanic Gardens, Kew.

USDA PLANTS Database

Growth habit, native status for North America, and taxonomy for US species come from the USDA PLANTS Database, maintained by the United States Department of Agriculture, Natural Resources Conservation Service. As a US federal government work, the data is in the public domain.

Wikidata and Wikipedia

Common names and some descriptions for well-known species are drawn from Wikidata (CC0) and the English Wikipedia (CC BY-SA 4.0). Where a description originates on Wikipedia, the plant page links back to the article for full attribution and edit history.

Perenual

Horticultural data such as sunlight, watering, and mature size is enriched from the Perenual API, used under their commercial licence terms.

Plant photographs

Where Perenual does not have a photo for a species, Twigged falls back to a licence-aware resolver that fetches photos from iNaturalist and Wikimedia Commons. We only accept photos on licences we can use in a commercial product — Creative Commons CC0, CC BY, CC BY-SA, and public domain. Each photo is stored with its photographer name and licence, and those details appear in small type under the photo on the plant detail page.

If you are a photographer whose photo appears in Twigged and you believe the attribution or licence is wrong, please email hello@twigged.app and we will correct or remove it.

AI-generated content

AI design suggestions and visualiser images are generated by models from OpenAI and Anthropic on request. These outputs do not have a single human source; their accuracy should always be checked before being used with a client. See our Terms for details.