My winter lows are just above freezing on the upper end of the property. Last winter was the first in 3 years I touched 32F, but normally I get a few days that are in the mid 30s.
My soil mix for Garcinia is an equal part Peat moss and Garden bed soil mix, with 10-20% perlite added. The garden bed mix I source from San Pasqual valley soils by the cubic yard and it’s comprised of a blend of “premium composts, washed sand, coco coir, pumice and gypsum.”