Every week, someone texts me a photo of a houseplant that looks like it’s been through something. Crispy brown edges, yellowing leaves, a fiddle leaf fig dropping foliage like it’s auditioning for a horror movie. The message is almost always some version of the same line: “I swear I’m not doing anything different — why is it dying?”
Here’s what I tell them after 25 years of keeping plants alive in this city: it’s probably not you. It’s Austin. The same things that make this a great place to live — the heat, the limestone under our feet, water that comes out of the tap hard enough to leave a white ring on your glass — are quietly working against your plants every single day.
Most of the plant advice online was written for somewhere that isn’t here. So let me walk you through the five things that actually kill houseplants in Austin, in the order I see them, and how I bring plants back from each one.
Problem #1: Your tap water is harder on plants than you think
Austin’s tap water comes from the Colorado River, stored in the Highland Lakes and treated by the city. It’s good drinking water — but it’s hard and alkaline, sitting up around a pH of 8 with a heavy mineral load. Every time you water, you’re leaving a little calcium and magnesium behind in the soil. Over months, those minerals build up, push the soil pH up past what most tropical plants can handle, and start locking out the nutrients the plant needs even when they’re right there in the pot. The classic tell is crispy brown leaf tips and a chalky white crust on the soil surface or around the drainage holes.
Here’s the part that trips up even careful plant people: Austin disinfects its water with chloramine, not chlorine. The old advice to “let your water sit out overnight so the chlorine evaporates” does absolutely nothing here — chloramine doesn’t gas off the way chlorine does. So folks think they’ve solved the water problem and they haven’t touched it. And if you’re out in the Hill Country on a well — Dripping Springs, Wimberley — you’re pulling from the Trinity Aquifer, which is harder still.
The fix is mostly about resetting that mineral buildup: flush the pot heavily every couple of months to rinse the salts out, switch sensitive plants over to filtered water or collected rainwater, and repot tired plants into fresh mix to start the soil chemistry over. I go a lot deeper on which plants shrug this off and which ones can’t in my guide to plants for Austin’s hard water.
Problem #2: Your AC is running a desert in your living room
To survive the summer, our air conditioners run nearly half the year — and every hour they run, they pull moisture out of the air. Most houseplants are tropical and want something like 50–60% humidity. An AC-cooled Austin home in August can sit down around 30% or lower. To a plant, that’s a desert with good lighting.
This one is sneaky because the symptom — crispy, browning edges — looks exactly like thirst. So people water more. Now the plant is sitting in soggy soil it can’t use, the roots start to rot, and a humidity problem becomes a death spiral. I’ve rescued more plants from “helpful” overwatering than from neglect. The fix isn’t more water; it’s more moisture in the air: group your plants together so they share their own humidity, run a small humidifier near the thirsty ones, and keep everything out of the direct blast of an AC supply vent. There’s more on surviving our cooling season in my Austin summer plant guide.
Problem #3: The summer sun is stronger than you remember
The light that was perfect in March will scorch a plant in July. Our summer sun is intense and high, and a west-facing window that felt bright and pleasant in spring turns into a heat lamp by late afternoon. You’ll see it as bleached, washed-out patches or papery scorched spots on the leaves facing the glass — often on the exact plant that was thriving in that same spot two months earlier.
Plants don’t move themselves, so you have to. A sheer curtain takes the worst of the edge off, or just pull the plant a few feet back from the glass for the peak summer months and slide it back when things cool down. If you’re working with limited light to begin with — a north-facing apartment, an interior wall — it’s worth starting with species that actually want that, which is what my list of the best houseplants for Austin apartments is built around.
Problem #4: The freeze you stopped thinking about
We all remember Uri in February 2021, but you don’t need a once-in-a-generation storm to lose plants to cold. Austin gets sudden hard freezes that drop in overnight — a 75-degree afternoon followed by a Blue Norther that puts us in the 20s by morning. The plants that get hit are the ones pressed against a single-pane window, sitting in an unheated sunroom, or catching the draft every time the back door opens. After a cold snap you’ll find leaves that have gone mushy, translucent, and then black.
The move is simple but easy to forget: when a freeze is in the forecast, pull your plants off cold windowsills and away from drafty doors, even just into the middle of the room. It costs you five minutes and saves the plant. I keep a full Austin freeze-prep guide for exactly these nights, because they always seem to land when you’ve gotten comfortable.
Problem #5: It was already dying when you bought it
This is the one nobody wants to hear: sometimes the plant was doomed before it ever reached your windowsill. The big-box garden sections get plants that were shipped stressed, sat overwatered on a loading dock, and were jammed root-bound into too-small pots under fluorescent light. You bring home what looks like a healthy plant and it’s actually a problem with a two-week head start — fungus gnats, root rot, or roots circling so tightly the plant can’t take up water at all.
When I take on a new plant from a store like that, I check the roots before anything else, keep it away from my other plants for a couple of weeks in case it brought pests, and usually repot it into fresh mix right away. If you want the full story on why those plants struggle and how to spot a healthy one, I wrote about it in why big-box store plants die — and if you’re just getting started, my beginner plants for Austin list will steer you toward the ones that forgive a learning curve.
If the problem turns out to be bugs rather than care, knowing exactly what you’re looking at is half the battle. Here’s my full guide to identifying and treating the houseplant pests I see most in Austin homes — spider mites, scale, thrips, and the rest.
When a plant is past the point where a blog post helps
Sometimes you read all of this, do everything right, and the plant is still circling the drain — or you just don’t have the time to play detective. That’s literally what I do. Keep Austin Watered does plant rescue visits, and the consult is free: I come take a look, figure out which of these is actually going on in your specific home with your specific water and light, and get the plant back on track — or tell you honestly when it’s time to let one go. No subscription, no pressure, just a fix.
Book a rescue visit → and send me a photo of the patient. After 25 years, there’s not much I haven’t seen come back.
Further reading:
Plants for Austin’s hard water · Surviving the Austin summer · Austin freeze prep · Why big-box store plants die · Beginner plants for Austin · Best houseplants for Austin apartments
Related: office plant service.
Related: out in the Hill Country on well water? See how well water and softeners quietly kill houseplants.