Photo by Melody

PlantFiles: Dinner Plate Dahlia, Dinnerplate Dahlia
Dahlia 'Grand Prix'

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Dahlia (DAHL-ya) (Info)
Cultivar: Grand Prix
Hybridized by Bruidegom; Year of Registration or Introduction: 1965

» View all varieties of Dahlias

8 members have or want this plant for trade.

Section:
Decorative

Flower Size:
Giant - over 10 inches (250 mm) diameter

Bloom Color:
White
Yellow
Bicolor

Pruning:
Disbud

Height:
36-48 in. (90-120 cm)

Spacing:
15-18 in. (38-45 cm)

Foliage:
Herbaceous
Smooth-Textured

Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)

Danger:
Parts of plant are poisonous if ingested

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By dahlia_fanatic
Thumbnail #1 of Dahlia  by dahlia_fanatic

By dahlia_fanatic
Thumbnail #2 of Dahlia  by dahlia_fanatic

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive dahlia_fanatic On Sep 24, 2009, dahlia_fanatic from Corvallis, OR wrote:

These blooms have many petals and are attractive in the garden through a long opening process. This is a really large yellow and white bi-color.

Neutral mystic On Aug 31, 2002, mystic from Ewing, KY (Zone 6a) wrote:

In warmer climates you maybe able to leave the tubers in the ground with heavy mulch. But for me in Zone 6 I have to dig the tubers before first frost.Clean and let dry good.Pack in dry peat and store in cool dry place.

Regional...

This plant has been said to grow in the following regions:

Canton, Illinois
Corvallis, Oregon



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