Identification guides
Quick answers to the questions people actually search for.
2026-05-03
What Is This Rock I Found on the Beach? A 30-Second Identification Guide
Most beach rocks fall into one of five families. Three quick tests narrow yours down before you even look up the species. Tables, diagnostics, and the rookie agate confusions to avoid.
2026-05-03
What Are These Small White Worms in My Plant Soil? Three Species, One Decision Tree
95% of white worms in potting soil are one of three species. Quick visual diff, what they actually do to your plant, and what to do about each.
2026-05-03
What Is This Tiny Black Bug in My House? Identify by Where You Saw It
Skip the bug-by-bug catalogs. Where you spotted it narrows the possibilities to 2–3 species. Decision table, the bedbug confirmation that matters, and how to handle the rest.
2026-05-13
What Is This Tiny Brown Bug in My Bathroom? Five Species, One Common Cause
Brown bugs in the bathroom are almost always one of five species. The cause is the same for all of them: humidity. Identify and fix in one pass.
2026-05-13
What Is This Shiny Rock With Sparkles? The Five Sparkle Sources
Sparkles in a rock come from one of five minerals. Color of the sparkle and how it flakes tells you which — and whether you have fool's gold or actual gold.
2026-05-13
What Weed Is This in My Lawn? The Five Most Common, by Leaf Shape
Five weeds make up 80% of lawn complaints. Identify by leaf shape and growth habit, then match the right control. Treating the wrong category wastes the bottle.
2026-05-13
Is This Mushroom Poisonous? The Honest Answer Before You Pick Anything
Three deadly mushrooms imitate common edibles. Apps cannot keep you safe. What to actually check, when AI helps, and when only a human mycologist will do.
2026-05-13
Is This Coin Valuable? What Actually Determines Value (and What Doesn't)
Most coins aren't valuable. Four signals consistently are: silver content, key dates, mint errors, and grade. Five common myths that don't move the needle.
2026-05-13
What Is This Old Tool I Found? Identifying Antique Hand Tools
Old tools in basements, barns, and attics. Five categories cover most finds. Brand markings, handle types, and form tell you what it is and roughly when it was made.
2026-05-13
What Shell Is This from the Beach? Identify by Shape First, Then Pattern
Beach shells split into two camps at the first cut: univalve or bivalve. From there, shape and aperture narrow the species. Quick table and the protected species to leave behind.
2026-05-13
How to Tell If a Painting Is Valuable: What Auctioneers Look For First
Most paintings are decorative, not collectible. Six features separate the two, and one of them is almost always missing on prints sold as originals.
2026-05-13
What Is This Mark on the Bottom of Pottery? Reading Maker Stamps in 60 Seconds
Pottery marks date and place a piece quickly. Country format alone narrows the era. Five mark systems cover most of what you'll find in a house.
2026-05-13
What Is This Rusty Metal Object in My Yard? A Field Guide to Yard Finds
Rusty things in the soil are almost always one of seven categories. Magnet test, shape, and burial depth narrow it. The history of the property usually fills in the rest.
2026-07-02
What Are These Tiny Bugs in My Kitchen? Sort Them by Zone
Kitchen bugs split into three zones: pantry, drain, and counter. Where you see them names the species and the fix. Tables, plus the one that means throw the box out.
2026-07-02
What Are These Tiny Flying Bugs in My House? Identify by Where They Swarm
Tiny flying bugs indoors are almost always one of six: fruit flies, fungus gnats, drain flies, phorid flies, or winged ants and termites. Where they gather names them.
2026-07-02
What Are These Tiny Black Bugs on My Plants? Aphids, Thrips, and the Rest
Tiny black bugs on plants are aphids, thrips, spider mites, whitefly, or fungus gnats. Where they sit and how they move tells you which, and each needs a different fix.
2026-07-02
What Is This White Fuzzy Stuff on My Plant? Mealybugs vs Mildew vs Mold
White fuzz on a plant is one of four things: mealybugs, powdery mildew, woolly aphids, or harmless soil mold. Two are pests, two are fungal. Tell them apart before you treat.
2026-07-02
Is This Rock Worth Anything? A Realistic Value Check
Most found rocks are worth nothing, but a few are worth real money. Five features separate them, and three quick tests tell you before you drive to a dealer.
2026-07-02
How to Tell If a Rock Is a Meteorite: The Field Test Checklist
Nearly every suspected meteorite is a 'meteorwrong.' Five simple tests rule out the common impostors (slag, magnetite, hematite) before you pay for lab analysis.