Vegetables
Watermelon Planting Calculator
Citrullus lanatus
Everything you need to plan Watermelon: recommended spacing, how many plants and seeds you'll need, when to start, and when to expect a harvest. Defaults come from grower references and every value is editable.
At a glance
- Recommended spacing
- 24″
- Range 18–24″
- Planting pattern
- Rows
- Time to first production
- 85–90 days from transplanting
- Succession planting
- Not typical
- Start indoors
- 3 weeks before
- before last frost
- Production pattern
- Standard
Plan your Watermelon beds
Prefilled with Watermelon's recommended spacing. Adjust your bed size to get plant counts, seeds to start, and tray requirements.
Loads recommended spacing and planting pattern. You can override anything.
ft
ft
in
Default 24″Range 18–24″
Your plan
75
Total plants
25 per row × 3 rows
- Seeds to start (10% buffer)
- 83
- 72-cell trays needed
- 2
- 128-cell trays needed
- 1
More Watermelon planning
Planning notes
- This crop can be direct sown.