Plant tools & calculators
Quick, free helpers for the questions a care guide can't answer in one number - how often to water, how much to feed, how much light you've got. No sign-up, nothing saved, just fast answers with honest defaults. Looking for something specific? Search the whole site.
Plant Origins Map
Where do your plants actually come from? Explore the wild home of 80+ houseplants and garden favourites by region - and see how a plant's origin explains the light, water and warmth it wants.
Hardiness Zone Finder
USDA zone ranges for all 50 states with typical last and first frost dates - know what survives your winter before you buy the plant.
Freezer Storage Times
Preserving the harvest? Look up how long berries, fruits and vegetables keep frozen, whether to blanch first, and the best way to thaw - USDA-based.
Leaf Doctor
Diagnose by picture: match your leaf to the illustration - brown tips, yellow leaves, white powder, webbing or spots - and jump straight to the fix.
My Plant Shelf
Track every plant you own: where it lives, when you last watered (one tap) and how many days it has been - with a link to each plant's full care guide. Stays in your browser, nothing leaves your device.
Care Card Generator
Pick any houseplant and get a clean printable care card - light, water, humidity and a pet note, straight from our care guide. Perfect behind the pot, for plant-sitters, or tucked in with a gift.
Garden Bed Planner
Design a raised bed square by square: pick crops, fill the grid, and get the right number of plants per square plus a full plant list. Colour-coded by family so you can rotate.
Succession Planting
Stop your salad maturing all at once. Pick a crop and a start date and get a schedule of repeat sowings, spaced for a steady supply instead of a glut.
Herbal Tea Steep Timer
Pick a home-grown tea for the right water temperature, dose and steep time - then run the built-in countdown so you never stew it bitter.
Frost-Date Sowing Calendar
Enter your last spring frost date and get a personal sowing plan - when to start each vegetable indoors and when to sow or plant it out, in order. Printable.
Watering Scheduler
How often should you really water? Pick your plant, pot, light and season for a starting interval - plus how to check before you pour.
Plant Problem Solver
Yellow leaves, brown tips, drooping, bugs? Pick the symptom and get the likely causes and fixes, ranked most-common first.
Fertilizer Dilution
Turn a bottle that says "1 tsp per gallon" into the exact dose for your watering can - in millilitres or teaspoons.
Light Checker
Describe your window - direction and distance - and find out if it's low, medium or bright, and which plants will thrive there.
Soil Mix Calculator
Get the right parts of potting mix, perlite, bark and coco for aroids, succulents, cacti and seed-starting.
Repot Timing & Pot Size
When is it time to size up, and to what diameter? Based on your plant's current pot and how root-bound it is.
Terrarium Builder
Layered cross-section diagrams for closed tropical, open succulent and moss-and-fern terrariums - what each layer does, the plants that suit it and how to care for it.
Planting Calendar
What to sow and do this month for your climate zone - from seed-starting to last-frost timing.
Raised Bed Soil Calculator
How much soil and compost does a raised bed swallow? Enter the size and depth for litres, bags and a simple fill mix.
Plant Spacing Calculator
How many plants fit your bed - and the spacing that actually gives you a harvest instead of a crowd.
How Much to Plant
How many plants per person for a useful home supply, by crop and how much you actually eat.
Fermenting & Brine Calculator
Get the salt right for a safe, crunchy ferment - weigh your veg and water, pick a strength, get the grams.
Companion Planting Checker
What to plant beside each crop, and who to keep at the other end of the bed - with the honest reason why.
Crop Rotation Planner
Tell us what grew in a bed last, and get a simple, healthy four-year rotation for the years ahead.
Fruit Pruning Calendar
When to prune and feed each fruit - apples, plums, grapes, berries - and the one rule that matters most.
What to Sow This Month
What to start indoors, sow outside and harvest right now - a month-by-month kitchen-garden calendar.
Succulent Watering Checker
A soak-and-dry watering rhythm for cacti and succulents by type, season, light and pot - plus the signs of over- and under-watering.
Pond Volume Calculator
Enter your pond's shape and size for its volume in litres and gallons, plus a suggested pump flow, rough fish-stocking guide and treatment dosing.
Bonsai Style Selector
Describe how your tree's trunk grows and get a classic bonsai style to aim for - upright, slanting, cascade or windswept - with what to do next.
Grass Type Selector
Pick your climate, sun and foot traffic and get a lawn grass suited to it - fescue, ryegrass, bermuda, zoysia and more.
Grass Seed Calculator
Enter your lawn area and grass type for how much seed you need - for a new lawn or overseeding - in kilograms and pounds.
These tools give sensible starting points, not rules - your home, your plant and your pot always have the final say. When in doubt, read the full watering guide or browse all 180 plant profiles. Everything free we make, in one place: the free plant care library.