Park Seed
Dahlia Karma Prospero Decorative Dahlia Bulb
Best choice for gardeners wanting prolific, pollinator-friendly blooms for late-season bouquets.
The Dahlia Karma Prospero® Decorative Dahlia Bulb produces prolific, pastel, fully double waterlily-form flowers from mid-summer to late autumn. Its pink-lavender petals are symmetrically arranged, inviting pollinators like bees, butterflies, and hummingbirds. These flowers are ideal for late-season bouquets and arrangements, and the more you cut them, the more they bloom. This clump-forming dahlia is a gem in containers, beds, and borders, and it thrives in full sun to part shade with moist, well-drained soil. It adapts to various soil types, including clay, loam, and sandy. Regular care includes pinching for fuller growth and deadheading to encourage more blooms.
$14.95
Owner Satisfaction
4.5
/ 5
Category Rank
1533
/ 3088
#1533 in Plant & Flower Bulbs
Price vs Category Average
-37%
Below average
Mature Height
4
/ Feet
Who it's for
- Floral designers needing sturdy, show-stopping stems for indoor arrangements
- Gardeners seeking high-impact visual drama for their outdoor spaces
- Flower lovers wanting long-lasting color throughout the entire growing season
Who should skip it
- Busy gardeners wanting low-maintenance plants that stay in the ground
- Hands-off growers who prefer plants that resist common garden pests
- Urban gardeners with limited sunlight or poor soil drainage
Performance breakdown
Bloom Prolificacy
Consistent cutting triggers a continuous cycle of vibrant, double-form flowers.
Pollinator Attraction
Open petal structure serves as a reliable magnet for local pollinators.
Soil Adaptability
Versatile root system thrives across clay, loam, and sandy soil profiles.
Floral Utility
Sturdy stems and long-lasting blooms make these ideal for fresh arrangements.
Maintenance Ease
Requires regular pinching and deadheading to maintain optimal shape and vigor.
Landscape Versatility
Compact clump-forming habit fits perfectly in containers or garden borders.
Key Specs
Mature Height
4 Feet
Mature Width
2 Feet
Hardiness Zones
8 - 11
Soil Tolerance
Clay, Normal, loamy, and Sandy
Moisture
Moist, well-drained
Light Requirements
Full Sun and Part Shade
Item Form
Bulb
State Shipping Restrictions
GU, PR, VI
Features
- Summer-flowering bulb
- Blooms prolifically in pastel fully double waterlily-form flowers with pink-lavender petals
- Pollinator-friendly flowers invite bees, butterflies, and hummingbirds
- Enduring flowers make picture-perfect late-season bouquets and floral arrangements
- Clump-forming plant that's a gem in containers, beds, and borders
- Thrives in rich soil that lets excess water escape
- Adapts across soil types—be it clay, loam, or sandy
- Can be grown as annuals in all Zones
What customers say
Customers consistently praise the vibrant beauty and robust growth of the Dahlia Karma Prospero bulbs. Many express delight with the stunning, large blooms that emerge, often exceeding expectations in color and form. The ease of cultivation is a recurring positive, with gardeners of varying experience levels reporting successful planting and impressive results. This product is frequently highlighted for delivering exceptional garden aesthetics with minimal fuss, making it a favorite for adding dramatic flair.
Know before you buy
At maturity, this dahlia reaches a height of 4 feet and a width of 2 feet. Given its size, ensure you provide enough space in your garden beds or choose a large enough container to support its growth.
Yes, while the plant is hardy in zones 8 through 11, it can be grown as an annual in all zones. If you live in a colder region, you can treat it as a seasonal plant or lift and store the bulbs indoors during the winter.
The Karma Prospero thrives in both full sun and part shade. While it will bloom in partial shade, providing at least six hours of sunlight will typically result in the most prolific flower production.
Absolutely. These waterlily-form flowers are excellent for bouquets, and the plant actually benefits from being cut; the more you harvest the blooms, the more the plant will produce throughout the season.
This variety is quite adaptable and performs well in clay, loam, and sandy soils. The most important requirement is that the soil remains moist but well-drained to prevent the bulb from sitting in excess water.
To maximize blooms, practice regular deadheading by removing spent flowers. Additionally, pinching the stems back during the growing season will encourage the plant to branch out, resulting in a fuller, bushier habit.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$15