Through the years I've tried just about everyone for bulbs but A.D.R. is tops. It's a family run business and the service levels and expertise are as good as the product they sell. My clients rave about the results we get with A.D.R. and that makes me happy.
Paul Keyes
, Paul Keyes Associates
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Narcissi Double 'Obdam'
Daffodil
Double Daffodil bulbs do not have a cup, but a filled center
One of the most fragrant classes
Excellent for the South
- » Deer, rodent & rabbit resistant
- » Pollinator friendly
- » Will naturalize for many years if the foliage is allowed to die back properly
- » Excellent for the South
- » Blooms in Early - Mid Spring
Narcissi Calculator
Growing and Maintenance Tips for Narcissi Double 'Obdam'
All wholesale Spring flowering bulbs must be planted in the Fall
Soil temperatures must be 55 F or below to ensure proper root development
The optimal planting time is when night-time temperatures hit 40-50 F
The ideal soil pH level for bulbs is between 6 and 7
Most bulbs require a minimum cold frame of 6 weeks to root properly
Notable exceptions - Bearded Iris and Daffodils require no cooling
All Daffodils contain the alkaloid lycorine which makes them unpalatable to deer and rodents
Plant Characteristics
Additional Information
| Height | 14 Inches |
| Spread | 4-6 Inches |
| Spacing | 4-6 Inches |
| Hardiness Zone | 3-9 |
| Color |
White |
Storage Tips
Store bulbs in a cool, dry spot with good air circulation and low humidity
Most bulbs can tolerate temperatures between 38 and 70 F
Protect from heat, frost and strong sunlight
Pre-cooled bulbs for the South must be planted immediately
Avoid These Common Pitfalls
Not sure if a bulb is viable? Look for bulbs that are firm to the touch
Bulbs hate "wet feet" - never plant in areas with poor drainage or standing water
Planting when the soil temperature is too warm is the primary cause of stunted blooms
Road salt and de-icing compounds are harmful to bulbs - avoid areas where plowed snow accumulates
Crop rotation is key - don't plant the same type of bulb in the same spot year after year to protect against Rhizoctonia
Don't plant too shallow - it's essential that bulbs are planted at least 3 times their height into the soil
Plant bulbs firmly in the soil with their pointy end up and basal plate down - not all bulbs will right themselves underground
Avoid areas that do not receive at least half a day of sun
Plant away from invasive tree and perennial root systems that can strangle bulb roots & compete for limited water and nutrition
Wholesale Only Flower Bulbs Direct From Our Family Farms in Holland
A.D.R. Bulbs supplies wholesale daffodil flower bulbs, specializing in bulk daffodils for landscape professionals & retail packaged daffodil bulbs for garden centers
Top size, elite quality, wholesale only flower bulbs since 1946