A method and system for cultivating angiosperms in a limited space in natural or artificial light by a dynamic growth constraint apparatus that limits vertical growth during the vegetation phase but allows vertical growth during the flowering phase, such that the flower or fruit may be optimally harvested. In various embodiments, the apparatus includes a mesh to constrain vertical growth of the cultivated plant and a mechanism for raising, lowering and rotating the plant or constraining mesh with respect to the other. In various embodiments, the mesh is moved with respect to the plant during the vegetation phase of the plant and immobile during the flowering phase of the plant. Plant phase and thus the mesh/plant motion may be controlled by artificial light timing, the detection of natural light, or by digitized image analysis of the plant during its growth phases.