Planting one straight row of evenly spaced bulbs often looks sparse. Planting in quantity in non-linear patterns will always give a richer appearance. This is why mass planting has always been the traditional way to use bulbs. Mass plantings can include dozens or even hundreds of bulbs - especially if you do a naturalizing project. If you don't have room for mass planting, or need to start small, a reliable way is to plant in clumps of six or more bulbs. This is a very attractive method for hyacinths, daffodils and tulips. In the clump, space your bulbs about 10 or more centimetres apart.