How deep to plant bulbs
Spring flowering bulbs
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Snowdrops: 5-10 cm
Trumpet daffodils: 15-20 cm
Hybrid tulips: 15-20 cm
Crown imperial fritillarias: 15-20 cm
Summer flowering bulbs
Giant onion alliums: 15-20 cm
Calla lilies: 10-15 cm
Canna lilies: 10-15 cm
Gladioli: 10-15 cm
Fall flowering bulbs
Colchicum crocuses: 5-10 cm
Saffron crocuses: 10-15 cm
Read more in Plants and Flower Bulbs
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