A new and distinct
cultivar of
Coleus plant named ‘G21015’ is disclosed, characterized by a compact, densely branched
plant habit forming a globose shape. Foliage is dark burgundy red in the central area, surrounded by a thick gold-green picotee edge and a fine dark burgundy red margin. Floral
initiation begins in early October, or later at 41N
latitude, under natural daylength. Foliage is strongly resistant to
Coleus downy mildew (CDM), caused by
Peronospora choii. No symptoms of CDM have been observed on new variety ‘G21015’ since its selection in 2021 in
greenhouse, outdoor container, or outdoor in-ground trials. In those same trials, CDM-susceptible
Coleus varieties were observed to suffer foliage losses due to CDM infection at rates from 25% to 100%. The new
cultivar is a Coleus, typically produced as an outdoor
ornamental plant or for garden or container uses.