https://petermetz.de/ 2026-04-14T07:50:24+00:00 https://petermetz.de/ https://petermetz.de/lib/tpl/bootstrap3/images/favicon.ico text/html 2022-03-14T10:28:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://petermetz.de/rtd:refs:bio:cultivation:start?rev=1647253731&do=diff Cultivation Air-Prune Beds “An air-pruning propagation system is a low-cost, efficient method of propagating cuttings, seedlings or container plants for restoration projects. Air pruning happens naturally when roots are exposed to air in the absence of high humidity. The roots are effectively 'burned' off, causing the plant to constantly produce new and healthy branching roots. If roots are not exposed to air, they continue to grow around the container in a constricted pattern. The roots ma…