I have worked with A.D.R. Bulbs for almost 5 years now, and my company has sourced bulbs with them for longer than that. Communication is great - from ordering, to deliveries, to follow-ups on final product. I love the quality of the product as well as the service. We plant nearly 100,000 bulbs and A.D.R. keeps the whole process easy for us!
Louise Licata
, Bland Landscaping Co.
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Tulipa Single Late 'Catherina'
Tulip
Single Late (or French) tulips are the tallest class of tulips
On par with Darwin Hybrid's as the top choice for mass plantings
- » Terrific for cut flowers and mass plantings
- » Our favorite class for landscape use in the South
Recommended Substitutes for Tulipa Single Late 'Catherina'
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When should I plant Tulipa Single Late 'Catherina'?
Growing and Maintenance Tips for Tulipa Single Late 'Catherina'
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 are 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
Tulips in particular need 12 to 16 weeks in the dark with a sustained soil temperature below 50° F
Plant Characteristics
Additional Information
| Height | 24 Inches |
| Spread | 2-4 Inches |
| Spacing | 4-6 Inches |
| Hardiness Zone | 3-8 |
| 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 tulip flower bulbs, specializing in bulk tulips for landscape professionals & retail packaged tulip bulbs for garden centers
Top size, elite quality, wholesale only flower bulbs since 1946