Bulb Spacing Calculator

Your details

The longest side of your planting bed.
ft
The shorter side of your planting bed.
ft
Selecting a bulb type pre-fills the recommended spacing and depth. Choose "Custom" to enter your own.
Leave at 0 to use the recommended spacing for the selected bulb type. Enter a positive value to override it.
in
Gap to leave between the outer bulbs and the bed edge. A 3-inch clearance keeps the border tidy.
in
Triangular staggering fits more bulbs in the same space and looks more natural.
Bulbs neededGood density
160

Total number of bulbs to plant in this bed

Spacing used6
Planting depth6 in
Bed area40
Density4
Number of rows20
Bulbs needed160
Rows20

You need 160 bulbs for this bed.

  • Your 40.0 sq ft bed needs 160 Tulip (large) bulbs.
  • That is 4.0 bulbs per sq ft, a natural, open look.
  • Plant Tulip (large) bulbs 6 in deep and 6 in apart for best results.

Next stepAdd 10-15% extra bulbs when ordering to allow for any that are damaged or fail to sprout.

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