"Dry by night time"

[SouthPark]

I only recently saw a clip on a pretty good Australian gardening tv show ------ that featured an owner of an Australian orchid nursery - and interestingly his nursery is really called 'Australian Orchid Nursery'.

Quite a nice clip, and we can excuse the gardening show's mistakes with orchid name convention (eg. they wrote things like Dendrobium 'Flinders' instead of Dendrobium Flinders etc).

Anyway, at time 5 min 33 sec into the clip, the nursery owner mentioned something about watering ---- as in (quote) 'you want those leaves dry by night time so you don't get fungal and bacterial infections'.

Anybody heard this before? I reckon some explanation is probably needed there - such as some regions experience still or relatively still air when the sun goes down, or something. Or relatively less drying or evaporation effect at night time etc. Or those things mentioned, and maybe made worse if orchids are contained in a green-house that doesn't have much air-movement inside.

In forests or rainforest, and places out in the wild, and in people's back yards (with orchids out in the open outdoors) - there sure are going to be orchids having their leaves and stems wet at night time.

Australian Native Orchids at Australian Orchid Nursery - YouTube