The Leaf Scan blog
Feature launches, plant-care intelligence, and the occasional strong opinion about watering schedules.
Storing Dormant Cuttings: How to Keep Propagation Material Alive Until You're Ready to Root ItHow-to · September 11, 2026Took cuttings but aren't ready to root them yet? Learn how temperature, humidity, wrapping, and light control keep propagation material alive for days or weeks.
Hard Water and Houseplants: What Mineral Buildup Does to Roots, Leaves, and Soil Over TimeCare intelligence · September 11, 2026Hard tap water deposits calcium and magnesium carbonates in soil and on leaves, quietly raising pH and locking out nutrients. Here's what's actually happening and how to help.
Root Pruning: When Your Plant Needs a Trim Below the Soil, Not a Bigger PotHow-to · September 11, 2026Learn how to safely trim a root-bound plant's roots so it can keep thriving in the same pot — no bigger container required.
Fungus Gnats vs. Shore Flies: How to Tell These Look-Alike Pests Apart (and Why It Matters)Care intelligence · September 11, 2026Fungus gnats and shore flies look similar but damage plants differently and need different fixes. Here's how to tell them apart before you treat.
Whiteflies on Houseplants: How to Spot the Clouds of Tiny Insects and Get Rid of ThemCare intelligence · September 11, 2026Whiteflies cluster on leaf undersides and explode into clouds when disturbed. Learn to spot every life stage and treat them effectively.
Aphids on Houseplants: How to Find Them, Confirm the Infestation, and Get Rid of ThemCare intelligence · September 10, 2026Aphids cluster on new growth and leave sticky honeydew behind. Here's how to identify them, tell them apart from similar pests, and clear them out for good.
Thrips on Houseplants: How to Spot the Silvery Streaks and Get Rid of These Tiny PestsCare intelligence · September 9, 2026Silvery streaks on your houseplant leaves? Learn how to identify thrips damage, confirm an infestation, and treat it step by step.
Mealybugs on Houseplants: What That White Fuzzy Stuff Is and How to Get Rid of ItCare intelligence · September 9, 2026Spotted white fluff on your houseplant? Learn how to identify mealybugs, tell them apart from other white residues, and treat them step by step.
Spider Mites on Houseplants: How to Spot the Webbing, Confirm the Pest, and Get Rid of ThemCare intelligence · September 9, 2026Tiny webbing, stippled leaves, dusty foliage — spider mites are sneaky. Learn how to confirm an infestation and treat it effectively.
Scale Insects on Houseplants: How to Find Them, Identify Them, and Get Rid of ThemCare intelligence · September 9, 2026Scale insects look like bumps on stems and leaves — here's how to tell soft scale from armored scale and actually get rid of them.
Fungal Leaf Spot on Houseplants: What Those Brown Circles and Rings Really MeanCare intelligence · September 8, 2026Brown circles, target rings, and tiny black dots on leaves? Learn to identify fungal leaf spot, tell it apart from bacterial damage, and clear it up for good.
Silicon and Houseplants: Does This Overlooked Mineral Actually Make a Difference?Care intelligence · September 8, 2026Silicon isn't an essential nutrient, but research shows it can strengthen cell walls and boost stress resistance. Here's what indoor growers should know.
Chlorine and Chloramine in Tap Water: Which Plants Are Sensitive and What to Do About ItCare intelligence · September 7, 2026Some houseplants are genuinely harmed by chlorine and chloramine in tap water. Learn which are most sensitive and how to protect them.
Molybdenum Deficiency in Houseplants: Why Leaf Edges Cup, Scorch, and Look Like Other ProblemsCare intelligence · September 6, 2026Molybdenum deficiency causes cupped, scorched, or strap-like leaves in houseplants — and it's routinely mistaken for wind burn, potassium, or calcium deficiency.
Do Houseplants Actually Compete With Each Other? What Allelopathy Means IndoorsCare intelligence · September 5, 2026Some plants release chemicals that can suppress their neighbors. Here's what the science of allelopathy actually says — and what it means for your indoor plant groupings.
Growing Houseplants on Cork Bark: How to Mount Epiphytes Without SoilHow-to · September 4, 2026Learn how to mount epiphytic orchids, hoyas, and ferns on cork bark slabs — including how to attach plants, water, and fertilize without a pot.
Zinc Deficiency in Houseplants: Why New Leaves Come In Small, Distorted, or MottledCare intelligence · September 3, 2026Learn to recognize zinc deficiency by its hallmark small, narrow, mottled new leaves — and how to tell it apart from iron, calcium, boron, and copper deficiency.
Sulfur Deficiency in Houseplants: Why Young Leaves Yellow Uniformly (Not Just Between the Veins)Care intelligence · September 2, 2026Sulfur deficiency makes young leaves turn uniformly yellow — easy to confuse with nitrogen or iron problems. Here's how to spot, distinguish, and fix it.
Boron Deficiency in Houseplants: Why Growing Tips Die and New Leaves Come Out DistortedCare intelligence · September 1, 2026Boron deficiency kills growing tips and distorts new leaves. Learn the symptoms, why it's not calcium deficiency, and how to fix it safely.
Copper Deficiency in Houseplants: Why New Growth Wilts, Twists, or Dies BackCare intelligence · August 31, 2026Copper deficiency is rare but real — and it always strikes new growth first. Learn to spot it, distinguish it from calcium deficiency, and fix it safely.
White Stains on the Outside of Your Terracotta Pot: What They Mean and Whether to Remove ThemCare intelligence · August 30, 2026That white powdery crust on your terracotta pot is efflorescence — mineral salts migrating through the clay. Here's what causes it, whether it harms your plant, and how to clean it.
Slimy Roots in Your Propagation Vase: What Biofilm Is and How to Handle ItHow-to · August 29, 2026That brownish slime coating your propagation roots isn't rot — it's biofilm. Here's what it is, when it matters, and how to keep it in check.
Guttation: Why Your Plant Is Dripping Water from Its Leaf TipsCare intelligence · August 28, 2026Tiny water droplets on leaf tips each morning? That's guttation — a normal plant process. Here's what it means, when it's harmless, and when to take action.
Mycorrhizal Fungi and Houseplants: Do Soil Inoculants Actually Help?Care intelligence · August 27, 2026Mycorrhizal fungi can be a genuine asset to plant health — but do commercial inoculants actually work for houseplants? Here's what the science says.
Moss Poles, Coco Coir Poles, and Wood Planks: How to Support Climbing Houseplants (and Why the Material Matters)How-to · August 26, 2026Moss poles, coco coir poles, and cork bark mounts each affect root attachment, humidity, and leaf size differently. Here's how to choose the right one.
Potassium Deficiency in Houseplants: Why Leaf Edges Turn Brown and CrispyCare intelligence · August 25, 2026Crispy brown leaf margins on older leaves — while veins stay green — are the classic sign of potassium deficiency. Here's how to spot, confirm, and fix it.
Phosphorus Deficiency in Houseplants: Why Leaves Turn Dark Green or Purple UnderneathCare intelligence · August 24, 2026Dark green foliage, purple leaf undersides, and poor roots can all signal phosphorus deficiency. Learn how to spot, confirm, and fix it.
Nitrogen Deficiency in Houseplants: Why Growth Slows and Leaves Fade to Yellow-GreenCare intelligence · August 24, 2026Pale older leaves, smaller new growth, and a general loss of vigor are the hallmarks of nitrogen deficiency — the most common nutrient shortfall in potted houseplants.
Magnesium Deficiency in Houseplants: Why Older Leaves Yellow FirstCare intelligence · August 23, 2026Older leaves yellowing between the veins while new growth stays green? Learn how to spot magnesium deficiency and fix it with simple remedies.
Calcium Deficiency in Houseplants: Why New Growth Curls, Crinkles, or Fails to OpenCare intelligence · August 22, 2026Curled, cupped, or blackened new leaves often signal calcium deficiency. Learn why it happens and how to fix it.
Phytotoxicity: When a Well-Meant Spray Burns Your Plant Instead of Helping ItCare intelligence · August 21, 2026Insecticidal soap, neem oil, and hydrogen peroxide can scorch leaves if applied incorrectly. Learn to recognize, treat, and prevent phytotoxic damage.
Crown Rot: When the Damage Is Right at Soil LevelCare intelligence · August 20, 2026Crown rot attacks the narrow zone where stem meets roots. Learn to recognize it, understand why it's uniquely dangerous, and act fast enough to save your plant.
Fasciation: Why Your Plant Is Growing a Flattened, Ribbon-Like StemCare intelligence · August 19, 2026Fasciation turns a stem into a flattened, fan-shaped ribbon. Learn what causes this odd growth, whether it hurts your plant, and what to do about it.
Why Your Plant Is Dropping Leaves After Repotting (And How to Help It Recover)Care intelligence · August 18, 2026Leaf drop after repotting is often transplant shock, not a crisis. Learn why it happens, what's normal, and the exact steps that help your plant recover.
Corky Scabs on Houseplant Stems and Leaves: What Causes Them and When to WorryCare intelligence · August 17, 2026Corky scabs on stems and leaf undersides look alarming but are often harmless. Learn what causes them, which plants are prone, and when to act.
Stem Rot vs. Root Rot: How to Tell the Difference (and What to Do Next)Care intelligence · August 16, 2026Your plant is collapsing at the base but the roots look fine. Here's how to tell stem rot from root rot — and why the fix is different.
Powdery Mildew on Houseplants: What That White Dusty Coating Really IsCare intelligence · August 15, 2026That white dusty coating on your houseplant leaves might be powdery mildew — a fungal disease with specific causes, treatments, and prevention strategies.
Sooty Mold on Houseplant Leaves: What That Black Coating Is Telling YouCare intelligence · August 14, 2026That black powdery coating on your houseplant isn't the real problem — it's a clue. Learn what sooty mold means, why it forms, and how to fix the root cause.
Aerial Roots on Houseplants: What They Mean and Whether to Remove ThemCare intelligence · August 13, 2026Aerial roots growing from stems or nodes are normal for many houseplants. Learn what they signal, when they're healthy, and how to trim them safely.
Cold Pots, Hot Sills: How Root-Zone Temperature Affects Your HouseplantsCare intelligence · August 12, 2026The air around your plant and the soil inside its pot can be at very different temperatures. Here's why that gap hurts roots — and how to fix it.
Ethylene Gas: The Invisible Reason Your Plant Is Dropping LeavesCare intelligence · August 11, 2026Ethylene gas from ripening fruit, cut flowers, and gas appliances can trigger sudden leaf and bud drop in houseplants — here's how to identify and fix it.
Fluoride Sensitivity in Houseplants: Why Some Plants Hate Your Tap WaterCare intelligence · August 10, 2026Fluoride in tap water causes brown leaf tips on spider plants, dracaenas, and peace lilies. Learn which plants are most sensitive and how to protect them.
Cold Drafts and Your Houseplants: How to Spot the Damage and Move Plants to SafetyCare intelligence · August 9, 2026Cold drafts cause distinctive leaf damage — sudden blackening, soft collapsed patches, one-sided injury. Learn to identify draft sources and reposition plants safely.
Houseplant Sunburn: Why Leaves Turn Pale, Bleached, or Crispy in Bright LightCare intelligence · August 8, 2026Bleached patches, papery scorch marks, and crispy edges on houseplant leaves are classic sunburn signs. Here's why it happens and how to fix it.
The White Crust on Your Soil Isn't Mold — It's Salt Buildup (Here's What to Do)Care intelligence · August 7, 2026That white powdery crust on your potting soil or pot rim is fertilizer salt buildup. Learn what causes it, why it matters, and how to fix it.
Leaf Edema: Why Your Plant Is Growing Tiny Blisters (and How to Fix It)Care intelligence · August 6, 2026Leaf edema causes corky, blister-like bumps on houseplant leaves. Learn why it happens, which plants are prone to it, and how to fix it.
Interveinal Chlorosis: Why Your Plant's Leaves Are Yellowing Between the VeinsCare intelligence · August 5, 2026Leaves yellowing between the veins while veins stay green signals interveinal chlorosis — often iron or manganese deficiency. Here's how to tell them apart and fix it.
When Water Just Runs Straight Through: How to Rehydrate Bone-Dry Potting SoilCare intelligence · August 4, 2026When dry potting soil repels water instead of absorbing it, your plant stays thirsty no matter how much you pour. Here's why it happens and how to fix it.
What Your Houseplant Leaves Are Really Trying to Tell YouCare intelligence · August 2, 2026Yellowing, browning, drooping, spotting — leaf symptoms each point to a specific cause. Learn to read the clues your plant is sending.
Does Water Quality Actually Matter for Your Houseplants?Care intelligence · August 1, 2026Tap water, filtered water, rainwater — does it really matter what you pour on your plants? Here's what water quality actually does to your houseplants.
When Your Plant Runs Out of Room: Understanding Root-Bound HouseplantsCare intelligence · July 31, 2026Learn to recognize when a houseplant has outgrown its pot, what it means for plant health, and how to decide whether to repot or leave it alone.
How to Get Rid of Fungus Gnats (And Keep Them Gone)How-to · July 30, 2026Fungus gnats are annoying but beatable. Learn what causes them, how to break their life cycle, and how to keep your soil gnat-free for good.
Why Air Circulation Matters for Your HouseplantsCare intelligence · July 29, 2026Good airflow does more for your houseplants than you might expect. Here's what stagnant air costs your plants — and simple ways to fix it.
Soil Amendments for Houseplants: What to Add and Why It MattersCare intelligence · July 28, 2026Perlite, bark, pumice, coco coir — soil amendments can transform how your houseplants grow. Here's what each one does and when to use it.
Stem Cuttings: The Most Reliable Way to Multiply Your HouseplantsHow-to · July 27, 2026Stem cuttings work on dozens of popular houseplants. Learn exactly how to take them, root them, and pot them up for lasting success.
Why Your Houseplants Get Less Light in Winter (And What to Do About It)Care intelligence · July 26, 2026Seasonal light loss is one of the most overlooked reasons houseplants struggle in fall and winter. Here's what's happening and how to help your plants through it.
How to Propagate Houseplants in Water: A Beginner's GuideHow-to · July 25, 2026Water propagation is one of the easiest ways to multiply your houseplants. Here's exactly how to do it, and which plants respond best.
Why Are My Plant's Leaves Drooping? How to Find the Cause and Fix ItCare intelligence · July 24, 2026Drooping leaves can mean your plant is thirsty, waterlogged, too cold, or pot-bound. Here's how to read the clues and respond correctly.
How to Read Your Soil Before You WaterCare intelligence · July 23, 2026Learn to read your potting soil — not a calendar — to decide when your houseplants truly need water. Practical, species-aware advice.
Why Your Houseplant Slows Down (And Why That's Perfectly Normal)Care intelligence · July 22, 2026Houseplant dormancy isn't death — it's rest. Learn why growth slows in winter, how to adjust your care, and when to simply leave your plant alone.
When to Water and When to Wait: Reading Your Plant's Real NeedsCare intelligence · July 21, 2026Watering on a fixed schedule causes more houseplant deaths than almost anything else. Here's how to water based on what your plant actually needs.
Terracotta, Plastic, or Ceramic? How to Choose the Right Pot Material for Your HouseplantHow-to · July 20, 2026The pot you choose affects how fast soil dries, how roots breathe, and how often you water. Here's how to match the material to your plant.
Overwatering Isn't About How Much — It's About How OftenCare intelligence · July 18, 2026Overwatering is the most common houseplant mistake, but it's widely misunderstood. Here's what's actually happening in the soil — and how to stop it.
How to Save a Neglected Houseplant (Step by Step)How-to · July 17, 2026Brown leaves, bone-dry soil, mystery pests — a neglected plant isn't a lost cause. Here's how to assess the damage and nurse it back to health.
When, Why, and How to Feed Your HouseplantsCare intelligence · July 16, 2026Fertilizer isn't magic, but used correctly it makes a real difference. Here's how to feed your houseplants with confidence and avoid common mistakes.
What Soil Moisture Actually Feels Like (And Why It Matters More Than a Schedule)Care intelligence · July 15, 2026Learning to read soil moisture by touch — and knowing what each level means for your plant — is the single most useful skill in houseplant care.
How Temperature Affects Your Houseplants (And What to Do About It)Care intelligence · July 13, 2026Most houseplants suffer silently from temperature stress. Learn the warning signs, safe ranges, and simple fixes to keep your plants comfortable year-round.
What Your Plant's Roots Are Telling YouCare intelligence · July 12, 2026Roots are the hidden half of every houseplant. Learn to read their signals — from rootbound circling to soft rot — before problems reach the leaves.
When Houseplants Need a Humidity Boost (And What Actually Helps)Care intelligence · July 11, 2026Dry indoor air stresses many houseplants. Learn which plants need higher humidity, how to spot the signs, and which solutions genuinely work.
Why Drainage Is the Most Underrated Part of Houseplant CareCare intelligence · July 10, 2026Poor drainage quietly kills more houseplants than almost anything else. Here's how to recognize it, fix it, and match every plant to the right setup.
Grow Lights for Houseplants: What Actually Works (and What to Skip)Care intelligence · July 9, 2026Not every home has great natural light. Here's how to choose, place, and use a grow light so your houseplants genuinely thrive indoors.
Low-Light Houseplants That Actually Thrive (No Sunny Window Required)Care intelligence · July 8, 2026Not every room gets great light — and that's okay. Here's how to choose and care for houseplants that genuinely do well in dimmer spaces.
How to Group Houseplants for Better Growth (and a Better-Looking Home)Care intelligence · July 7, 2026Grouping houseplants isn't just an aesthetic choice — it affects humidity, pest detection, and overall plant health. Here's how to do it thoughtfully.
How to Water Houseplants Correctly (And Why Most of Us Get It Wrong)Care intelligence · July 6, 2026Overwatering kills more houseplants than anything else. Learn how to read your plant and your soil — not the calendar — to get watering just right.
When and How to Prune Your Houseplants (And Why It's Worth Doing)How-to · July 5, 2026Pruning houseplants isn't just cosmetic. Learn when to cut, where to cut, and which plants benefit most — without stressing your plant.
Common Houseplant Pests and How to Deal With ThemCare intelligence · July 4, 2026Fungus gnats, spider mites, mealybugs — learn how to spot, treat, and prevent the most common houseplant pests before they do real damage.
How to Care for Houseplants in WinterSeasonal · July 3, 2026Less light, dry air, and cool drafts change what your houseplants need. Here's how to adjust your care routine so plants stay healthy all winter.
How to Acclimate a New Houseplant (and Why the First Two Weeks Matter Most)Care intelligence · July 2, 2026Bringing a new plant home is exciting — but the transition period is when most plants struggle. Here's how to set yours up for a smooth start.
Why Cleaning Your Houseplant Leaves Actually Matters (And How to Do It Right)Care intelligence · July 1, 2026Dusty leaves do more than look dull — they can slow growth and stress your plant. Here's how to clean them safely and how often to bother.
When to Repot a Houseplant (and How to Know You've Waited Too Long)How-to · June 30, 2026Roots sneaking out the drainage holes, soil drying out in a day, stunted growth — learn the real signals that tell you a plant needs a new home.
Propagating Houseplants: A Beginner's Guide to Growing More from What You HaveHow-to · June 29, 2026Learn how to multiply your favorite houseplants through water propagation, stem cuttings, and division — no greenhouse required.
How to Fertilize Houseplants Without Overdoing ItCare intelligence · June 28, 2026Fertilizer helps houseplants thrive — but too much causes real damage. Here's how to feed your plants confidently and get the timing right.
Why Your Plant's Soil Matters More Than You ThinkCare intelligence · June 27, 2026The right potting mix is the quiet foundation of a healthy houseplant. Here's what's actually in your soil — and how to choose wisely.
How Humidity Affects Your Houseplants (And What to Do About It)Care intelligence · June 25, 2026Low indoor humidity stresses most tropical houseplants. Learn which plants care most, how to spot the signs, and practical ways to help them thrive.
How to Read What Your Plant Is Telling YouCare intelligence · June 24, 2026Plants can't speak, but their leaves, stems, and soil send clear signals. Learn how to decode the most common messages before small issues become big problems.
Why Your Houseplant Has Stopped Growing (And How to Fix It)Care intelligence · June 23, 2026No new leaves in weeks? Learn the real reasons houseplants stall — and the practical fixes that get them growing again.
What 'Bright Indirect Light' Actually Means — And How to Find It in Your HomeCare intelligence · June 22, 2026"Bright indirect light" is the most common plant-care instruction — and the most misunderstood. Here's what it really means and how to find it.
Brown Leaf Tips on Houseplants: What's Really Causing Them (and How to Fix It)Care intelligence · June 21, 2026Brown leaf tips are one of the most common houseplant complaints. Here's how to read the clues, find the real cause, and stop it from spreading.
Root Rot: How to Spot It, Stop It, and Save Your PlantCare intelligence · June 20, 2026Root rot is the most common killer of houseplants — and the sneakiest. Learn how to catch it early, treat it properly, and keep it from coming back.
Why Your Houseplant Leaves Turn Yellow (And How to Fix It)Care intelligence · June 19, 2026Yellow leaves are one of the most common houseplant worries. Here's how to read the clues and find the real cause — fast.
Watering Schedules That Bend to Real LifeProduct · June 11, 2026Life happens. Plants don't read calendars. Leaf Scan's new care engine adapts to your weather, your pots, and your actual routine — and always tells you why.
Pet Safety on Every Plant You ScanProduct · June 11, 2026Leaf Scan now shows cat, dog, and human toxicity on every identification and every plant in your garden — and warns you before a toxic plant comes home.
No Card, No Tricks: Our Pricing PromisesInside Leaf Scan · June 11, 2026Plant apps have a billing reputation problem. Here are the six promises Leaf Scan makes instead — starting with a free trial that doesn't ask for your card.
Introducing Growth Tracking: Your Plant's Story, Told by AIProduct · June 11, 2026Photograph your plant once a month and Leaf Scan's AI narrates what changed — new leaves, early warning signs, recovery progress — on a beautiful timeline.
A Plant Doctor That Asks QuestionsProduct · June 11, 2026Most plant apps diagnose from one photo and guess. Leaf Scan's new Plant Doctor asks follow-up questions, requests the photos it needs, and ends with a treatment plan it helps you carry out.
Why Our Plant ID Tells You When It's Not SureInside Leaf Scan · June 11, 2026Plant apps love to sound certain — and they're wrong embarrassingly often. Leaf Scan's identification now shows calibrated confidence, teaches you to tell look-alikes apart, and gets sharper with every photo you add.
Plant Care at a Glance: Widgets, Apple Watch & Live ActivitiesProduct · June 11, 2026"What needs water today?" now has a home-screen answer. Leaf Scan arrives on your widgets, your lock screen, and your wrist.