Rhubarb & Custard Collarette Dahlia Tuber – Rare Heirloom Flower Bulb PREORDER for Spring 2026

*This is a PREORDER that ships early Spring 2026

Meet the showstopper of your summer garden: the Rhubarb & Custard Collarette Dahlia available at Blue Buddha Farm. This rare and irresistible variety features creamy custard-yellow petals kissed with bold rhubarb-red tones and a cheery golden center — an exquisite bloom that looks as delicious as its name. 

With its warm & cool color contrast, this collarette dahlia adds instant charm and vibrant personality to garden beds, borders, or cut-flower arrangements. Each tuber grows into a profusion of 3-inch blooms that light up your garden from midsummer to first frost.

Whether you're a seasoned gardener or a dahlia enthusiast, this rare tuber is a must-have for your collection.

✨ Product Highlights

• 🌸 Variety: Rhubarb & Custard (Collarette Type)

• 🧡 Color: Creamy yellow with deep raspberry-red blush

• 📏 Bloom Size: Approx. 3 inches

• 🌿 Growth Habit: Bushy, mid-height

• 🕒 Bloom Season: Midsummer through frost

• 🧬 Type: Tuber (not seeds)
  

🧼 Care Instructions

• Plant after the last frost in well-drained soil

• Full sun (6+ hours daily) for best blooming

• Water regularly, avoiding soggy conditions

• Deadhead to encourage continuous blooms

• Lift and store tubers in fall for colder zones (zones 3–7)

🪴 Materials

• Live dahlia tuber

• Grown with organic methods and love 💚

🎨 Colors

• Petals: Creamy custard yellow with raspberry-red edges

• Center: Bright golden yellow

📐 Size

• Tuber ships ready to plant

• Mature plant height: Approx. 3–4 feet