Planning
Planting Calendar Calculator
Work out when to sow, transplant and harvest any crop from your frost dates.
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Free garden tools and calculators
Seven quick calculators for the questions every gardener asks: when to sow, how big a pot, how much water, how many seeds. No account, no cost, no adverts.
- 7 free tools
- No signup
- Instant results
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- Planning
Frost Date Lookup
Find your growing season length and the earliest safe planting date for each hardiness group.
Open tool - Space
Container Size Calculator
Find the pot volume, diameter, depth and soil quantity each crop needs.
Open tool - Water
Watering Calculator
Work out how many litres per watering and how often, adjusted for heat, sun and pot material.
Open tool - Light
Sunlight Calculator
Turn the hours of direct sun on your balcony or bed into a light category and a crop shortlist.
Open tool - Space
Seed Quantity Calculator
Turn a bed size and crop spacing into plant counts, rows and the number of seeds to buy.
Open tool - Planning
Companion Planting Checker
Check whether two to four crops get along before you commit them to the same bed.
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Keep your plan in one place
Vegarden turns these numbers into a real garden plan: sowing reminders, watering schedules and a harvest log for every bed.