Thanks! Usually, it is just for a few hours during nighttime or early morning. Ice days where temperatures do not rise above freezing measure 1-5 per year, frost days around 30. Ice days are most times isolated, but this february there were three in a row. But in its northernmost habitats in Miyagi prefecture, multiple ice days can also occur in a row.
A usual frost day has minimum -2C at night (28F) and arond 40F or 5C from noon to sunset in my area.
in france (big south of bordeaux (35 kms)), my dendrobium moniliforme grow outside for several years now and seem happy, flowering each year, and the last years, two times in the season (in may and in september), so for me, it is considered as an acclimatized epipytic orchid. I am in 8b USDA zone but probably close to zone 9 because of global warming.
Amazing! I attached a D. moniliforme in mid-April to a Juneberry and so far, it has neither been damaged nor lost its roots. I think with the warmer temps finally forecasted for the end of the week (this May has been the coolest I can think of, it felt more like late March), it will start growing again (it didn't grow more than a few millimetres). The natural precipitation is enough for it so far and the canes are nice and plumb. I will start to feed it soon. I still have to figure out how to install an automatic dripping system for the warmest time of the year.
I promise I will post pictures when it finally stops rainig!
I am planning to mount a V. falcata and a Phal. japonica as well, even though I do not give them high chances.
i consider, and it's totally a bias, that if i mount an orchid on a tree in order this one to live as epiphyte all year round, i do not have to water it or to feed it.
this orchid live completely as a wild plant and i guess (i don't see any other explication) the plant formed a symbiosis with a local fungus living on the trunk.
the last step will be for the dendrobium to be pollinated and form capsules but i've been said this dendrobium can't be self pollinated, so i plan to buy another one...and hope.