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LeafRanger
381,479 species, and growing on use

A library that goes and learns what it doesn’t know

Every plant catalogue has a long tail it has never researched. Ours closes the gap on demand: add a plant we hold only a name for and it goes and reads up on it, in about five seconds. Only if that genuinely fails do we say we don’t know.

Species · M–Z
Monstera deliciosaverified profile
bright indirect · moderate water · high humidity
Epipremnum aureumverified profile
medium light · light water · forgiving
Dracaena trifasciatacore fields
low to bright light · drought tolerant
Monstera boliviananot profiled yet
add it and we go and research it — about five seconds
Big number, small print

The long tail doesn’t stay untouched

Look closely at any plant database and you’ll find the same shape: a handful of deeply researched plants, and a very long tail of names. The difference is what happens when you reach into that tail.

Monstera deliciosa
verified profile
381,479
species we can name and place taxonomically
5,071
researched in advance — the rest on demand
27,681
carrying a pet-safety record

The middle number is a floor, not a ceiling. It counts the plants researched in advance — and it climbs every time somebody adds a plant from the tail, because that add triggers a real lookup rather than a shrug.

One record, opened up

What we actually keep on a plant

Not a paragraph of description scraped from somewhere. Structured fields the app can compute with — which is what lets a schedule adapt and an answer stay checkable.

  • Care that drives behaviour — light, water and humidity feed the watering engine and the placement score directly.
  • Pet safety in three states — harmful, assessed safe, or not assessed. Never a blank that reads as “fine”.
  • A verification grade on every record, so the app knows how firmly to speak.
  • Names people actually use, including outdated botanical ones, so search finds the plant either way.
LeafRanger · species record
NameMonstera deliciosa
Also calledSwiss cheese plant
LightBright indirect
WaterModerate — let the top inch dry
HumidityHigh
Pet safetyHarmful to cats and dogs · birds not assessed
VerificationVerified profile
The gap closes

Add a plant we don’t know and we go and find out

Most plants on Earth have never been written up for home growing. The lazy options are to guess, or to shrug. We do a third thing: the moment you actually add one, the app goes and researches it — and about five seconds later the record has real care data in it.

And when the lookup comes back empty? That field stays marked as missing, permanently visible, and nothing downstream may fill it in. Trying first and admitting second is a very different promise from admitting instead of trying.
A rare plant, just addednot profiled
NameWelwitschia mirabilis
FamilyWelwitschiaceae
Lightfull sunno data yet
Watervery little — desert plantno data yet
Humiditylowno data yet
Temperaturestill not on filenot found

Rare plants are looked up the moment they’re added — roughly five seconds, and the plant is yours either way.

One plant, seven names

Search the name you know, not the one a botanist knows

Common names are regional, marketing names are invented, and botanical names get revised. All of them have to land on the same record or the app is useless in a garden centre.

Monstera deliciosaaccepted name

1A climbing aroid grown indoors for its perforated leaves. Wants bright indirect light, moderate watering, and something to climb.

2Harmful to cats and dogs if chewed. Birds have not been assessed, so we don’t claim either way.

Also searched as
Swiss cheese plantsplit-leaf philodendronfruit salad plantcerimanPhilodendron pertusumMonstera lennea
any of these one record

Outdated botanical names matter more than they sound: nurseries print them for years after a revision, so the label in your hand is often a name the plant no longer officially has.

Sorted the way people shop

Nobody browses by botanical family

Taxonomy is how a catalogue is organised; it is not how anyone chooses a plant. So records also carry how the plant is actually grown — which is the way you’d ask for it in a shop.

House plants

The indoor survivors — aroids, palms, ferns and the ones that tolerate a north window.

Ornamental

Grown for how they look: flowering shrubs, foliage colour, structure.

Garden

Beds, borders and pots outdoors — where your real weather does the work.

Bonsai

Species that take training and pruning without sulking about it.

A plant can sit in several at once — plenty of garden plants make fine house plants, and saying so is more useful than forcing one label.

Where it earns its keep

A record isn’t a page. It’s an input.

This is the part a browsable list could never do. The same handful of fields feeds four different things at once, which is why the app’s answers agree with each other.

  • Your watering schedule starts from the species’ own thirst, then bends with your weather.
  • Placement scoring compares the light your corner measured against what this plant needs.
  • Herb quotes it verbatim — and on the rare field a lookup still can’t fill, so does he.
  • Shop suggestions filter on the actual problem instead of a category guess.
Monstera deliciosa
SPECIES RECORD · AS THE APP READS IT
lightbright indirect
watermoderate
humidityhigh
temperaturefilled on add
pet safetycats, dogs: harmful
birdsnot assessed
fields used5 of 6
— ONE GAP LEFT, AND IT SAYS SO —
Noted in the margin

What people ask about the data

Can I browse the whole catalogue on this site?

No — the library lives in the app, where it does actual work: identifying your photo, driving a watering schedule, answering a question about your plant. A website list of names wouldn't do any of that.

How do you decide a record is “verified”?

Records researched up front and cross-checked carry the most weight. Ones filled in on demand when someone adds the plant sit a step below, and both are marked, so the app knows how firmly to speak about each.

What if my plant isn't profiled yet?

Add it and the app goes and researches it there and then — usually about five seconds, and the plant is added either way. If that lookup genuinely comes back empty, the missing fields stay marked as missing rather than being filled with a guess.

Do you make up the missing data with AI?

We research it, which is not the same thing. Adding an unprofiled plant triggers a real lookup that writes verifiable care fields into the record. What we never do is let a downstream feature invent a value on the spot — if the lookup found nothing, the chat, the diagnosis and the shop all have to work around the gap rather than paper over it.

How current is it?

Botanical names get revised over time, so records carry accepted names alongside the older ones people still use, and the catalogue is refreshed as revisions land.

Is pet-safety data complete?

Nowhere near, and no honest source claims otherwise. Tens of thousands of species carry a safety record; the rest are marked not assessed, which is a real answer rather than a gap dressed up as “safe”.

The library is only useful with a plant in front of it

Reading about a catalogue proves nothing. Point the camera at the thing on your windowsill and see what comes back — including, sometimes, an honest “we haven’t profiled this one”.

Free plan, no card needed · Android first, iOS in development

LeafRanger Library
borrower’s card
What you can take out
Identify a plantfree
Read its carefree
Check pet safetyfree
Ask Herb about itpaid

No due date. Nothing to return.