Bulb Planting Calculator

About this calculator

Planting flower bulbs at the right density is mostly a matter of geometry: divide the bed's area by the space each bulb needs, and you get how many bulbs will fill it evenly. Spacing recommendations vary by bulb type and desired look — tulips and daffodils are typically spaced 10–15 cm apart for a naturalistic drift, while smaller bulbs like crocuses can be packed closer for a dense carpet of color.

This calculator takes your bed's area and your chosen bulb spacing and estimates how many bulbs to buy, saving a trip back to the garden center for more (or leftover bulbs going to waste). It's a practical tool for home gardeners and landscapers planning autumn bulb plantings, letting them budget the right quantity before digging a single hole.