Photo by Melody
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PlantFiles: Polyanthus Primrose
Primula 'Pacific Giant'

Family: Primulaceae
Genus: Primula (PRIM-yew-luh) (Info)
Cultivar: Pacific Giant

Synonym:Primula x polyantha

3 members have or want this plant for trade.


6-12 in. (15-30 cm)

6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Sun to Partial Shade
Light Shade
Partial to Full Shade

Unknown - Tell us

Bloom Color:
Bright Yellow
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer


Other details:
Flowers are fragrant

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball

Seed Collecting:
Unknown - Tell us

Click thumbnail
to view:

By kniphofia
Thumbnail #1 of Primula  by kniphofia

By DaylilySLP
Thumbnail #2 of Primula  by DaylilySLP

By DaylilySLP
Thumbnail #3 of Primula  by DaylilySLP

By DaylilySLP
Thumbnail #4 of Primula  by DaylilySLP

By DaylilySLP
Thumbnail #5 of Primula  by DaylilySLP

By DaylilySLP
Thumbnail #6 of Primula  by DaylilySLP

By DaylilySLP
Thumbnail #7 of Primula  by DaylilySLP

There are a total of 10 photos.
Click here to view them all!


1 positive
No neutrals
2 negatives

Gardeners' Notes:

Positive perrotgirl On May 9, 2010, perrotgirl from Montreal
Canada wrote:

These are wonderful early bloomers in the spring and add a real punch of color to the garden. I have successfully over wintered these plants for 3 winters now by mulching heavily in the fall.

Negative EstelleMirage On Jun 24, 2008, EstelleMirage from Ste-Victoire
Canada wrote:

The plants I purchased in 2005 also did not survive their first winter, while I grow successfully another unidentified Primula polyantha hybrid (pink with yellow center) that thrives and blossoms like crazy in the same flower bed under trees with sun in the spring and lots of shade in the summer, lots of snow in winter. So the death of the Pacific Giant was not due to inadeqate conditions.

Negative Malus2006 On Apr 7, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

After blooming during the spring season, 5 to 6 planting of this cultivar dies during the winter or the second winter - if it survive the first winter it is a smaller rosette with no flowers.


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

Citrus Heights, California
Royal Oak, Michigan
Minneapolis, Minnesota
East Amherst, New York

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