A.D.R. is, by far, my favorite bulb company. Top quality products at a fair price and the best customer service out there.

Chris, I speak nothing but the truth. A.D.R. IS my favorite bulb company and I've never ever had even the smallest problem that A.D.R. hasn't taken care of to my complete satisfaction.

Bonnie Pega , The Great Big Greenhouse

« Previous Plant | Next Plant »

Tulipa Single Late 'Catherina'

Tulip

Catherina is a Single Late tulip, known for its large, creamy-white, egg-shaped flowers with broad ivory-white petal edges and a buttercup-yellow base. It blooms in late spring, standing on tall, sturdy stems that reach 24 inches.

This variety thrives in full sun to partial shade with well-drained soil and is prized for its classic, elegant form, making it a standout in borders, cut flower arrangements, and mass plantings. A popular alternative to the classic Tulip Maureen which is no longer widely grown.

Description	Price
Bin Display Box of 100 Bulbs, Size 12+	$68.20
Get Notified When Back In Stock Complete this form and we'll notify you when SKU BIN6115080 is restocked. Email: Needed By: Qty Requested:
Bulk Tray of 500 Bulbs, Size 12+	$300.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU BUL14579012 is restocked. Email: Needed By: Qty Requested:
Skid of 5,000 Bulbs, Size 12+	$2,900.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SKID0200 is restocked. Email: Needed By: Qty Requested:
Skid of 10,000 Bulbs, Size 12+	$5,600.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SKID0201 is restocked. Email: Needed By: Qty Requested:
Skid of 20,000 Bulbs, Size 12+	$10,800.00
Get Notified When Back In Stock Complete this form and we'll notify you when SKU SKID0417 is restocked. Email: Needed By: Qty Requested:

Tulipa Calculator

Fill out the dimensions below to determine how much product is required for planting.

When should I plant Tulipa Single Late 'Catherina'?

Growing and Maintenance Tips for Tulipa Single Late 'Catherina'

Planting: Plant in fall when soil temperatures drop below 55°F. Set bulbs 6–8 inches deep with the pointed end up. Choose a sunny, sheltered site to protect their tall stems and graceful blooms from wind.
Spacing: Space bulbs 4–6 inches apart. For a dramatic effect, plant in groups of 10 or more—ideal for borders, cutting gardens, or formal displays.
Light: Full sun encourages strong stems and rich color. While light shade is tolerated, consistent sun enhances bloom longevity and form.
Soil: Use well-drained, neutral to slightly acidic soil (pH 6–7). Avoid poorly drained areas—French tulips are sensitive to bulb rot in wet spring conditions.
Watering: Water after planting to settle the soil. In spring, water only during prolonged dry spells to maintain bloom integrity without over-saturating the roots.
Temperature & Dormancy: Requires 12–16 weeks of cold (below 50°F) for root development and bud initiation.
Fertilization: Apply a balanced bulb fertilizer when planting and again in early spring as shoots emerge to support stem strength and bloom quality.
Pests: Squirrels may disturb bulbs—use mesh or mulch to deter them. Deer will eat buds and foliage, especially early in spring, so use fencing or repellents in high-pressure areas.
Disease: To prevent Botrytis (Tulip Fire), plant only healthy, firm bulbs in sunny, well-ventilated areas. Avoid overhead watering and remove any infected material—never compost. Rotate planting zones annually and avoid replanting in affected sites for at least three years.