PlantHaven Hot Selection – Thuja HIGHLIGHTS® ‘Janed Gold’ Posted on September 26, 2018 | Hot Selections | E-Briefs Thuja occidentalis HIGHLIGHTS® ‘Janed Gold’ from PlantHaven International is the Gold Standard – in performance “Hot or Cold.” Outstanding performance in Zone 4 winter (-30⁰F or -34⁰C) AND in extreme heat (+110⁰F or +43⁰C).