What planting density should I use for my flower bulbs?

It is wise to determine the number of bulbs to plant in a specific location. Excessive density can encourage disease, while too little density can lead to disappointing results.

If you only plant this type of bulb you can aim for the following densities

Species Number of bulbs per m2 Species Number of bulbs per m2
Allium (small species) 100 Galanthus 150
Allium (large species) 15-20 Hyacinthoides 40
Anemone blanda 75 Hyacinthus 25
Anemone coronaria 100 Ipheion 80
Camassia 10/20' Iris reticulata 50
Chionodoxa (small) 75 Leucojum aestivum 30
Chionodoxa (large) 50 Leucojum vernum 50
Colchicum 20 Muscari 100-150
Convallaria majalis 75 Narcissus 25-50
Corydalis 100 Nectaroscordum 20-25
Crocus 50-75 Ornithogalum nutans 75-100
Eranthis 50 Ornithogalum umbellatum 75-100
Eremurus bungei 5 Pushkinia 100
Erythronium 50-60 Scilla 100
Fritillaria (small) 100 Tulipa (small) 80
Fritillaria (large) 10 Tulipa (large) 60

If you are planting near other plants

Species Number of bulbs per m2 Species Number of bulbs per m2
Allium (small species) 20-30 Galanthus 50
Allium (large species) 05/10 Hyacinthoides 15-20
Anemone blanda 30-35 Hyacinthus 15
Anemone coronaria 20 Ipheion 20-30
Camassia 07/10 Iris reticulata 15-20
Chionodoxa (small) 40 Leucojum aestivum 15
Chionodoxa (large) 15-20 Leucojum vernum 25
Colchicum 20 Muscari 20-25
Convallaria majalis 40 Narcissus 15-20
Corydalis 25-30 Nectaroscordum 05/07'
Crocus 50 Ornithogalum nutans 15
Eranthis 50 Ornithogalum umbellatum 15-20
Eremurus bungei 01/03 Pushkinia 30-35
Erythronium 01/10' Scilla 30-35
Fritillaria (small) 10 Tulipa (small) 20-25
Fritillaria (large) 05/07 Tulipa (large) 15
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