Unpopular opinion: I think soil type matters more than sunlight for most houseplants

I've been keeping houseplants for about 8 years now, and after moving a peace lily from a west window to a north one but keeping it in my usual cheap potting mix, it started dropping leaves within a week. Meanwhile, a pothos in a homemade gritty mix with extra perlite has thrived in a dim corner for months. Has anyone else found that getting the dirt right makes up for less than ideal light?

3 comments

3 Comments

patriciareed7d ago

My rubber plant was in a south facing window and still looked sad until I switched to a mix with orchid bark, perlite, and regular potting soil at a 1:1:1 ratio. The roots started filling the pot and new leaves came in every few weeks after that. I think people underestimate how much drainage and air flow in the soil can fix light problems.

eric7237d ago

I used to be in the camp that thought as long as you had good light, soil didn't really matter that much. But I tried a similar mix last spring after my rubber plant started dropping leaves and I was surprised how fast it bounced back. I think a lot of us get scared of "overpotting" or using too much bark, but the roots really do appreciate that extra air. It makes sense when you think about it, they need to breathe just as much as they need water. Good call on the ratio, I might try that 1:1:1 myself next time.

kaiharris4d ago

Oh man, I've definitely been on the losing end of this experiment more times than I care to admit. I once killed a spider plant in a bright south window because I kept it in straight garden dirt I dug up from my yard, thinking "soil is soil." It got root rot so bad it basically turned into soup before my eyes. But then I have a snake plant in a gritty mix sitting in a dark hallway that's been pushing out pups like crazy, so yeah, I'm fully on board with the soil over sunlight thing now. What's your go-to mix for plants that are stubborn about light?