Plant hormones are found in the different tissues like the tip of the shoots, the tip of the roots, meristematic tissues, apical buds etc. Hormones like cytokinins, auxins which are usually plant growth promoters usually are synthesized in regions of active cell division. Hormones like ethylene which are plant growth inhibitors are found almost throughout the plant body but specially in the parts which are old and in regions of ripened fruits.

These hormones are translocated to the site of activity by the vascular bundle tissues like xylem and phloem.