• Light purple blue wish dahlias growing in a field
  • Light purple blue wish dahlia up close showing all the petals
  • A cluster of dahlia tubers with dirt on the ready for planting.
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Ships Spring 2027

Dahlia Tubers (Waterlily) - Blue wish

Color-changing petals transition through two-toned tips to soft, uniform lilac

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About the Variety

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Key Features

Heat Tolerant
Prefers Moist Soil
Container Friendly
Attracts Bees
Attracts Butterflies
Fast Growing
Easy to Grow
Perfect for Cut Flowers
Perfect for Borders
Edible

Plant Details

BOTANICAL NAME

Dahlia 'Blue Wish'

LIFE CYCLE

  • Perennial

SEED TYPE

  • Tuber

LIGHT REQUIREMENT

  • Full Sun

BLOOM SEASON

  • Summer through Fall

GROWTH HABIT

  • Upright

PLANT HEIGHT

  • 42 to 48 inches

PLANT TYPE

  • Waterlily

COLOR

  • Purple
  • White

Dahlia Blue Wish offers a unique, color-changing experience with petals that begin creamy white with periwinkle-purple tips before deepening to soft lilac as they mature. Its graceful waterlily form gives each flower an open, symmetrical appearance, while tall, sturdy stems make the blooms wonderful for cutting. Airy and enchanting, Blue Wish offers one of the closest hints of naturally blue coloring found among dahlias.

  • • Waterlily-type dahlias create flat, symmetrical blooms with a graceful circular outline
  • • Flowers measure approximately four to five inches across
  • • Sturdy stems are excellent for summer bouquets and cut-flower arrangements

Planting Information

PLANTING SEASON

  • Spring

SOWING METHOD

  • Direct Sow

PLANTING DEPTH

  • Deep Enough to Cover with 2 inches of Soil

WATER NEEDS

  • Average

PLANT SPACING

  • 12 to 18 inches

HARDINESS ZONES

  • 7
  • 8
  • 9
  • 10
  • 11

COVERAGE

Amount Recommended Coverage
2 Bulbs / Ships in Spring Up to 0.75 Sq. Ft
4 Bulbs / Ships in Spring Up to 1.5 Sq. Ft
8 Bulbs / Ships in Spring Up to 2.75 Sq. Ft

Planting Guide

View our Dahlia Planting Guide to learn more.

Ready to Grow

We guarantee that our seeds & bulbs will be true to type and ready to thrive. If something doesn't grow as expected, we will make it right. Questions? Call us at 855-440-2929

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    Dahlia Tubers (Waterlily) - Blue wish FAQs

    When do I plant dahlia tubers?

    Think of planting your dahlias when you plant your tomatoes. Plant in spring after the danger of frost has passed and the soil has warmed to at least 60°F. In warmer climates, planting can begin earlier than in regions with colder springs.

    What is a waterlily dahlia?

    Waterlily dahlias have fully double blooms with broad, gently cupped petals arranged in a relatively flat, symmetrical shape. Their elegant appearance resembles a waterlily floating on water, giving Blue Wish its graceful flower form.

    Do dahlias need staking?

    Staking is recommended, particularly in windy locations or when plants become heavily loaded with flowers. Providing support early helps protect stems as the plant grows.

    Are Blue Wish Dahlia flowers actually blue?

    No. True blue dahlias do not naturally exist, but Blue Wish comes close with its cool lavender and periwinkle tones. The purple-tipped petals can appear almost blue in certain lighting conditions.

    Will dahlias come back every year?

    Dahlias are tender perennials that can overwinter in the ground in sufficiently warm climates with good drainage. In colder regions, tubers should be lifted after frost and stored in a cool, frost-free location until spring.

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