Planting calendars · Houseplant care · Garden tools
Know what to plant, when to plant it, and how to keep it alive.
Month-by-month planting calendars for every USDA zone, care guides for hundreds of houseplants, and free calculators for watering, soil, seeds and spacing — all written as honest, practical guidance.
Not sure of your zone? Find your hardiness zone →
Free garden tools
Tools that do the maths for you
Planting Calendar by ZIP / Zone
What to plant this month in your zone
❧Frost Date Calculator
Average last & first frost dates
❧Seed-Starting Calculator
When to start seeds indoors
❧Companion Planting Finder
Good neighbours for each crop
❧Soil Volume Calculator
How much soil for a bed or pot
❧Watering Calculator
How much water your plants need
Browse the library
Start with your garden
Planting Calendar
What to sow, transplant and harvest each month — for zones 1 to 13.
❧Houseplants A–Z
Care guides for hundreds of houseplants — light, water, soil and common problems.
✿Growing Guides
Per-crop guides: seed starting, companion planting, watering and harvest.
✦Gardening by State
State-by-state growing advice — zones, frost windows and what grows well.
Fresh from the garden
Latest guides
Acidic Soil — How to Test, Manage and Garden in Low-pH Soil
Acidic soil explained: what low pH means for plants, how to test it, how much lime to apply, acid-loving plants that thrive, and the mistakes to avoid.
Aeonium Kiwi Care — The Complete Guide
How to care for Aeonium Kiwi (Aeonium 'Kiwi') — light, water, humidity, temperature, soil, repotting, feeding and fixing common problems.
Aeroponics — Growing Plants with Their Roots in Mist
Aeroponics explained: how plants grow with roots suspended in nutrient mist, what a home setup needs, honest costs and complexity, and common mistakes.
African Violet Care — The Complete Guide
How to care for African Violet (Saintpaulia ionantha) — light, water, humidity, temperature, soil, repotting, feeding and fixing common problems.
Aglaonema Cutlass Care — The Complete Guide
How to care for Aglaonema Cutlass (Aglaonema 'Cutlass') — light, water, humidity, temperature, soil, repotting, feeding and fixing common problems.
Aglaonema Emerald Beauty Care — The Complete Guide
How to care for Aglaonema Emerald Beauty (Aglaonema 'Emerald Beauty') — light, water, humidity, temperature, soil, repotting, feeding and fixing common problems.
Frost dates on this site are USDA zone averages, not exact dates for your garden. Always check your local extension service before planting out.