Boom Boom White Dahlias

How to Plant and Care for Dahlias

When to Plant

• Wait until all danger of frost has passed and soil is at least 60°F.
• Store tubers in a cool, dark, dry place until ready. Do not refrigerate.

Planting Dahlia Tubers in the Ground

• Choose a full sun location with well-drained soil.
• Dig a hole at least 2" deep and wide enough for the tuber or clump.
• Place tuber with the eyes or cut stem facing up (or lay on its side if unsure).
• Cover with soil. Do not water immediately unless soil is dry.

Planting in Containers

• Use a large container (minimum 12" deep) with drainage holes.
• Fill with high-quality potting mix. Plant tuber as above.
• Place in full sun and water only when the soil dries out.

Ongoing Care

• Water deeply 2–3 times per week once growth appears; keep soil evenly moist.
• Mulch to retain moisture and reduce weeds.
• Support with stakes as plants grow to prevent flopping.
• Fertilize monthly with a low-nitrogen fertilizer (5-10-10 or similar).
• Deadhead spent blooms to encourage more flowers.

In Zones 7 and colder, dig up tubers after first frost and store indoors for next year.

FAQs: Boom Boom White Dahlia

• 1. When and how should I plant Boom Boom White Dahlia tubers?
  Plant the bare root tubers in spring after the last frost. Choose a sunny spot with well-drained soil. Dig a hole about 2 inches deep, place the tuber horizontally with the eye facing up, and cover with soil. Water lightly until growth appears.
• 2. Do these dahlias need staking or support?
  Not usually! Boom Boom White Dahlias are bred with sturdy, thick stems that hold their own. However, if your site is very windy or you're growing in containers, a little extra support can help keep things tidy.
• 3. Can I grow Boom Boom White Dahlias in containers?
  Absolutely. Choose a container at least 12–14 inches deep with drainage holes. Container growing is great for smaller spaces and makes it easy to move them for optimal sunlight.
• 4. How long do the flowers last once cut?
  Cut blooms last up to 5 days in a vase. For best results, cut them in the morning and place them in cool water right away. Their ball-shaped form holds up beautifully in arrangements.
• 5. Will they come back next year?
  Boom Boom Dahlias are tender perennials. In colder zones (below USDA zone 8), you’ll need to dig up the tubers after the first frost and store them in a cool, dry place to replant next spring.