Cold damage creeps on little cat feet, it appears. More yellow-then-brown leaves seem to reveal
|This bird's nest Anthurium was
not covered for the cold.
themselves daily. Back in 1980, the International Aroid Society’s journal, Aroideana, published a small field study by Mark Moffler of the degrees of cold damage on aroids he was growing in Tampa. “The self-heading or arborescent philodendrons (Philodendron selloum and P. x evansii) and the birds-nest anthuriums (Anthurium hookeri and A. schlectendalii) appear to be the hardiest,’’ he wrote, while dieffenbachias and aglaonemas suffer in cold and need protection.
|This aquatic aroid sat in warm water but was killed anyway.|
Although colocasias, caladiums, alocasias and xanthosomas may be damaged and “go down in winter,’’ he continued, “they come back in the spring and can provide an excellent landscape accent.”
A lot depends on exposure and overhead canopy, wind protection and other factors. I’ve seen some totally brown monsteras and others that are unscathed. A tiny Anthurium clarinervium, one of those lovely velvet-leafed species, was killed in my shadehouse, while a mature A. magnificum is fine.
Chris Migliaccio, who will teach a Tuesday, Feb. 16 class called “Aroids from A to Z” from 7 to 9 p.m. at the garden, said “Generally heavy leaves are more hardy.” He plans to water less now, about once a week, and fertilize in March.
Deadline for online registration for Chris’ class is Feb. 12, and he will have a much better idea of survival rates then.