Boyd’s Bible Dictionary:
(country). No heath in Palestine. Evidently a desert scrub (Jer. 17:6; 48:6).
Concise Bible Dictionary:
Common Juniper
These words are supposed to refer to the Arabic Arar, which is a juniper (the Juniperus sabina). It grows on the rocks even to their summits in most sterile soil. It stands therefore as a fit emblem of the man who “maketh flesh his arm, and whose heart departeth from the Lord” (Jer. 17:6). Moab also, under the judgment of God, is compared to “the heath in the wilderness” (Jer. 48:6). The juniperus communis is another species.
Juniperus Communis
Juniperus Sabina