A method for cultivating and rearing ornamental plants and treelike plants as potted plants with the following method steps:P P a tube covered with opaque, heat-insulating insulating material with a funnel-shaped or shell-shaped enlargement at the upper end is placed upright into a pot;PPthe enlargement, tube and pot are then filled with a substrate; andPPinto the substrate of the enlargement a cutting or seeds are inserted.
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