The plant in your pic is a bromelaid. From the pineapple family with air plants and orchids. Elevation determines if they are red or green. We bring them in for the winter cold but you only have to water them a couple times a year to feed since we grow them in little pots here. Upper 90s to 110 temp and 90 to 100RH is a standard veg season. Harvest closer to low 80s temp and RH. Winter drops to -15F.
I am in the midwest. On the edge of the Ozark Mtns. More mountains to the south but I look down on corn fields as far as you can see the other 3 directions. Ever experienced the humidity of a corn field or up in the foothills? Add those together. I got mushrooms in the bed and tire sidewalls of my work truck when I park it on vacation for 2 weeks.
Tall and airy/ short and dense are characteristics associated with sativa/indica but not the defining factors. Leaf stomata are how you determine genus. Stomata are pores on the leaf that open and close. They draw in CO2 while releasing O2 and water vapor. Indica have fewer and smaller stomata to retain water. Sativa have many and larger stomata to expel water. It isn't a better wax coating keeping water out. It is the ability to shed excess water quickly after the rain stops. Towels left in a bucket of water for days will not mold. If you spread one out on a cloths line and wad the other up on the floor which will mold? You need saturation and air over time to grow mold. Remove saturation in a shorter time, mold can't grow.
I grow equatorial sativas. prune for air flow, and grew on the prevailing windward side of hills. Did that for 20 years without any mold issues. The plant that did mold was one I forgot I planted. The suburbs pushed out to me so I moved indoors almost 20 years ago.
Hey Sativa.
Thanks for sharing your history. And thanks for sharing about the pores. (I did not know that.)
I love the Ozarks, and almost moved there one time. Yes you do get humidity in summer. Thankfully it is not humid in the cold. (My dad once exclaimed, "The Ozarks! Close to heaven, man!")
I grew my first plants in Washington State around 2016-2017, and had zero problems with mold.
Later I had to move to a place where I could not grow, and recently got back to it.
Growing on the Pacific side of Colombia was easy.
In this particular location (tippy-top of the Amazon River basin / Atlantic drainbasin) I had bud mold indoors under LED on Purple Kush CBD Auto, Northern Light CBD Auto (surprise!), Eleven Roses CBD Auto, and I forget what else.
I also lost two TopTao Blueberry Crystals (basically an auto Blueberry with some Haze) on the roof, under a greenhouse with the windows and doors removed.
When I stopped to ask myself what was wrong, the light bulb
came on that the common thread was indica, and indica-dominant strains.
I love indica. It helps me turn my brain off, and go to sleep. (But not if it is moldy.)
(There was something else I lost to humidity in this location but I forget what right now. I have also lost crops to bugs / Russet mites.)
I vastly prefer growing indoors. The environment is much easier to control. My problem is that I cannot afford the light bill, so I need to find ways to drop/lose the electicity cost.
We are trying to start an eco-sustainable farm, so the obvious answer was a greenhouse, except that greenhouses are humid, and I lost plants to humidity on the roof in a covered setup--so I am trying to figure out what to do.
The first obvious answer was to go sativa, and sativa dominant.
The second obvious answer (which
@cbdhemp808 and others helped me with) was to look for mold-resistant phenos. So that is what this whole mess with Coffee Shop was about.
@cbdhemp808 's answer is that there are certain terpenes that inhibit mold. Sounds good.
I started a soak on five Mango Biche Colombian sativas, which are *supposed to be 70-30 sativa dominant, and they have the reputation for being practically bulletproof to all Colombian pests, mold, humidity, rains, etc. That sounds pretty good right now. So I am soaking five seeds.
If I get even one good mother I can make clones for next year, and then put them with CBD in the grinder. They are super psychoactive (I thought I had entered my host's Wi-Fi and was communicating with him in another dimension or something.)
Basically I am just popping beans and looking for sativa phenos. And trying to keep them from rotting. And making clones. I got some trichoderma which we will be applying to the grow.
We are changing the greenhouse design to have mesh-and-wire walls (at
@cbdhemp808 's suggestion). We will put a plastic "sweater" sidewalls on during veg, and then take them off during the warm months, so we can use local valley winds instead of electric fans (but we are wiring the electricity in case).
Since the daylight and nighttime is a near-constant 12/12 year round, we will add night interruption lighting during veg, and then take away the lights and the plastic "sweater" for flowering (to let the winds do their work).
If plants make it, they make it. And if they do not, they do not.
I expect Mango Biche will make it, and we will see what else makes it.
Do you have any advice about how to reduce / inhibit mold when I am already searching for sativas that do not mold, and plan to put trichoderma?
Thanks.
thank you Sativa1970. 
good point.