Free calculators, planners, and lookups to help you plan, plant, and grow — all in one place. Every tool below is built for home gardeners, no sign-up needed.
What are you trying to figure out?
Time it right
Frost dates, planting calendars, and straight answers on when to do each garden task.
Choose what to plant
Finders that match vegetables, herbs, and flowers to your zone, sun, and space.
Build beds & soil
Raised beds, containers, soil math, compost, and mulch — measured, not guessed.
Fix a problem
Diagnose sick plants, spot nutrient issues, and check what is safe around pets.
Plan my space
Layouts, spacing, seed quantities, watering, and budgets for the season ahead.
Track my garden
Journal, harvests, and seed inventory — everything stays in your own browser.
All tools
Planning & Timing
- Frost Date Calculator — Look up your first and last frost dates so you can time every planting with confidence.
- Gardening Zone Lookup — Find your USDA hardiness zone to choose plants that will thrive in your climate.
- Seed Starting Calendar — Get a custom schedule for when to start seeds indoors and transplant them outside.
- Planting Calendar — See exactly when to plant each crop in your area, month by month.
- Harvest Date Estimator — Estimate when your crops will be ready to pick based on your planting date.
- Monthly Gardening To-Do List — Never miss a task with a seasonal checklist of what to do each month.
- What to Plant Now — Enter your ZIP code to see what to plant outdoors now, what to start indoors, and what’s coming up for fall.
- What Can I Grow Here? — Match vegetables, herbs, and flowers to your USDA zone, sun, and space.
- Plant Finder — Filter 59 vegetables, herbs, and flowers by zone, sun, difficulty, and harvest speed.
Soil & Beds
- Raised Bed Soil Calculator — Figure out how much soil you need to fill your raised beds without overbuying.
- Topsoil Calculator — Calculate how much topsoil to order for beds, lawns, and grading projects.
- Soil pH Calculator — Learn how much lime or sulfur to add to bring your soil pH into the ideal range.
- Compost Ratio Calculator — Mix the right balance of greens and browns for fast, healthy compost.
- Mulch Calculator — Work out how many bags or yards of mulch you need to cover your beds.
- Container Size Picker — Pick the right pot size for every plant so roots have room to thrive.
Planting & Care
- Square Foot Garden Planner — Plan high-yield beds with the square foot gardening method.
- Garden Layout Library — Browse ready-made garden layouts for beds of any size.
- Seed Quantity Calculator — Calculate exactly how much seed to buy for the area you want to plant.
- Fertilizer Rate Calculator — Measure the right amount of fertilizer so plants get fed, not burned.
- Companion Plant Lookup — Discover which plants grow well together — and which to keep apart.
- When to Prune Lookup — Find the best time of year to prune your trees, shrubs, and perennials.
Problem Solving
- Plant Problem ID Tool — Identify what’s wrong with your plants and learn how to fix it.
Decision Lab
- Should I Do It Now? — Get a straight verdict on garden tasks: do it today, this week, or wait.
Decision Chains
- Raised Bed Builder — Plan your bed: size, soil volume, lumber, plant spacing, and timing.
- Container Garden Builder — The right pots and plants for your sun, space, and budget.
- Start Seeds — Your seed-starting plan: what to sow, when, and how much seed you need.
- What-If Simulator — Change one assumption — budget, sun, bed size, timing — and see what changes in your plan.
- The Garden Brief — A short email when your garden actually changes: what changed, one useful guide, nothing else.
Timing & Frost
Calculators
Diagnosis
My Garden
Your garden data stays in your own browser — we never see it.
Tasks & Planning
- Weekly Garden Tasks
- Weather-Aware Reminders
- Garden Email Reminders
- Garden Bed Planner
- Crop Rotation Planner
- Vegetable Variety Finder
Garden email reminders are on the roadmap — sign up on the garden email signup page to be notified when they launch.
Plant Finders
Safety & Fruit
All 73 tools are free with no sign-up — and anything you save stays in your own browser.