Update on mangos from PlantoGram. Mangos, Jakfruit, etc. were encircled with field fence covered with poly plastic. Reptile heaters installed inside. Top of encircled plants were only closed twice this winter (at 35 degrees, 9 PM) as a precaution. Heaters never used, all encircling covers removed first week of February. Damage: some spotting on new leaves of mangos, slight discoloring. Jakfruit top leaves curled and dead, lower leaves green and intact, wood OK. Canistel is fine, green sapotes untouched by cold. According to max/min orchard thermometer we hit 27 degrees some time during this winter. Thermometer is next to mangos. Duration must have been very short as the only other frost/freeze damage on the property is on new growth on Cassia (Senna alata, raised for Giant Cloudless butterfly). No effects observed on new growth on macadamia or avocados. This on property held for 47 years experiencing 17 degrees one time and a usual 25-26 degrees each winter, usually of long duration. Plans are to continue experiencing an apparent global warming trend with additional plantings (if I can find room).
As an aside, two litchi plants from PlantoGram were heavily sprayed with a (miticide?) to the extent of transparent leaves that subsequently curled and dropped. Both put in greenhouse, one died, Brewster growing well. Nice caliper plants! Planning on putting Litchi out too, but will hit Champa Nursery (local almost) for more litchi plants to avoid mite eradication efforts.