What filament is safe for planters and plants?

A planter has two questions mixed together: whether the plastic is an appropriate material next to soil or food plants, and whether the print survives weather. This catalog can answer the certification cell. It is empty on the rows below. Weather is outdoor filament, PLA outdoors, and waterproof prints. Printing ASA in a room is ABS and ASA fumes. Food contact is the page for anything you would also call food-safe.

Temperatures, with no plant mark

Hatchbox PLA lists 180–220 °C (356–428 °F) and a bed of 50–70 °C (122–158 °F), checked 19 October 2026. PolyLite PETG lists 220–250 °C (428–482 °F), a bed of 70–90 °C (158–194 °F), and drying at 65 °C (149 °F) for 6 h, drying checked 18 October 2026. PolyLite ASA lists 230–260 °C (446–500 °F), a bed of 75–95 °C (167–203 °F), and drying at 70 °C (158 °F) for 7 h, checked 21 October 2026. No safety certification is listed. It is not a ranking of which one belongs in a pot.

Questions