where are you ...big city name... will the wall be entirely indoors???

how do you heat your house.. if forced air.. how will you deal with humidity ...

what will your light source be...

how will you water...

where will excess water drain ... in the basement??

never heard of this.. do you have a good link to share ..

houseplants are houseplants.. because they can cope with all the variables above.. and many more.. things that are not commonly known or sold as houseplants will struggle indoors .. due to a myriad of issues specific to those plants... broad generalizations will be hard to follow...

evergreen.. is the definition of a plant that is green all year.. or EVER ... but that doesnt mean its a houseplant ...

do you have any experience growing houseplants???

ken

Not a good idea unless you are in the tropical rain forest.

Are you looking for a plant that isn't evergreen in the wild but is evergreen indoors?

Some hotels in tropical areas maintain their living walls in open topped interior courtyards with elaborate misting and irrigation systems. If you have a similar situation in your house, you could try buying a dozen low-light ferns, three or four of each variety, and set up a temporary misting and irrigation system, including drainage. Keep them inside and growing for a year. Then decide which ones you want to use in a wall.

Or you could use a Disneyland display approach where new plants are grown behind the scenes and moved to display areas every few weeks, replacing the fading plants.

I wanted a living wall, but my partner was hesitant (due to issues with watering described by others). Here is our compromise. These are succulents, but I think if we were better at consistently caring for the plants, we could have other types that would fill in the spaces better. Or maybe if we arranged the boxes differently? (We also have a toddler that enjoys pulling on the hanging pieces, so, hoping in a few years they will do better).

There is a company Livewall thta has a ton of info but to answer your question about frens the reason they do not stay everrgreen is the temp where you live. All frens die back in the winter in cold climates . Living walls aew beautiful but need huge work to install and have working properly so that you do not have a house full of mould. So check out that company and talk to them about this working where you live. I tried an exterior one and the squirrels burined nuts in there used the mose for whatever I finally gave up.

@apple_pie_order: Exactly. I haven't yet had the pleasure of growing ferns inside. But understand that if the ferns are not exposed to seasonal cold, most perennials (even those not evergreen) can maintain their foliage. I was seeking confirmation that such is true.

@Hannah Lovely execution! Keeping a living wall alive manually is a tough feat! (Even tougher with a toddler!)

@Patricia Colwell Consulting We've already selected our vendor, but thanks for the recommendation!

@gardengal48 (PNW Z8/9) Thanks for chiming in! Any idea if perennial ferns that lose their fronds due to seasonal cold (such as the Lady fern), remain evergreen when the climate is kept constant?

I can't answer that as I have never tried to grow a lady fern indoors. But most plants that are deciduous or lose their foliage in winter or during dormancy fail to thrive when not provided the requisite cold period and low light levels they would encounter in a natural, outdoor setting. They could well hang on for a while but will decline over time. The same reason one cannot grow Japanese maples indoors :-))

Thanks for the insight, @gardengal48 (PNW Z8/9)!