Search the Perenual species catalogue by name and return candidate species with ids. Use the returned id with plant_details, companion_check, or planting_window rather than passing a name again -- resolving a name costs an extra upstream request.

Full care profile for one species: sun, water, hardiness zones, mature height, edibility, toxicity to people and pets, and known pests. Fields the configured Perenual plan withholds are reported as null and named in notes rather than left silently absent.

Frost envelope and hardiness fit for a plant at a location. Given coordinates it derives last spring frost, first autumn frost, season length, and the USDA zone from ten years of observed daily minima. Supply days_to_maturity and frost_tolerance from your own crop data to also get transplant and sow-by dates -- no source this server reads publishes those, so they are never guessed.

Whether two plants should share a bed, with the mechanism behind the answer. A "bad" verdict is derived from shared botanical family (rotation and soilborne disease) or overlapping pest susceptibility, never from folklore. A "good" verdict comes from a documented Permapeople listing when that source is configured. Every matched reason is returned, including any the verdict overrode.