How Many Rows in a 30-Foot Bed at 18-Inch Spacing?
A 30-foot garden bed with 18-inch spacing typically fits approximately 20 planting rows.
How to use this tool
- Enter the garden bed length in feet (the direction rows run across).
- Enter the spacing between row centres in inches.
- The calculator returns the number of rows that fit and the total span they occupy.
Eighteen-inch spacing suits most brassicas and lettuces — find how many rows fit in your 30-foot bed.
Frequently asked questions
- How many rows fit in my garden bed?
- Divide the bed length by the row spacing in feet, then add 1 for the first row. Example: a 20 ft bed with 18-inch spacing: 20 ÷ 1.5 = 13.3, plus 1 = 14 rows.
- What is the best row spacing for vegetables?
- Spacing depends on the crop: lettuce 12 in, carrots 12–18 in, peppers 18 in, tomatoes 24–36 in. Check your seed packet or variety recommendations.