Enligt min erfarenhet är svaret på de flesta lövrika örter ja, fräckhet och smak bevaras. Aldrig försökt hyssop, men Trädgårdssköterska Know How -siten säger att det fryser bra:
it can be dried or frozen and stored for later use. When harvesting a hyssop plant, cut it in the morning hours once any dew has dried. Hang the plants upside down in small bunches to dry in a dark, well-ventilated area. Alternatively, you can place the leaves in a plastic bag after removing them from the stems and place in the freezer until ready to use.