Photo by Melody

PlantFiles: Giganteum Poppy, Opium Poppy, Breadseed Poppy, Lettuce Leaf Poppy
Papaver somniferum 'Giganteum'

Family: Papaveraceae (pa-pav-er-AY-see-ee) (Info)
Genus: Papaver (puh-PAY-ver) (Info)
Species: somniferum (som-NEE-fer-um) (Info)
Cultivar: Giganteum
Additional cultivar information: (aka Florist Pod)

Synonym:Papaver somniferum var. giganteum
Synonym:Papaver giganteum

25 members have or want this plant for trade.


36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)

Not Applicable

Sun Exposure:
Full Sun

Parts of plant are poisonous if ingested

Bloom Color:
White/Near White

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; direct sow after last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By gmc42082
Thumbnail #1 of Papaver somniferum by gmc42082

By poisondartfrog
Thumbnail #2 of Papaver somniferum by poisondartfrog


1 positive
3 neutrals
No negatives

Gardeners' Notes:

Neutral DaylilySLP On Jul 2, 2013, DaylilySLP from Dearborn Heights, MI (Zone 6a) wrote:

Papaver somniferum 'Giganteum' is not a recognized or registered name.
It is used in the trade to identify Papaver somniferums that are for one reason or another "larger" than normal.
Anyone has any documented information on this plant, please send info to me via DMail.

Neutral MusaRojo On Jun 8, 2009, MusaRojo wrote:

It isnít against the law to grow this plant or any other variety of Papaver somniferum, notice that there are four venders who sell the seed for it. Itís illegal to score the seedpods or otherwise process the plant to produce narcotics.

Neutral Justgrowin On Jun 8, 2009, Justgrowin from Adrian, MO wrote:

Unless the law has recently changed, I believe it is against federal law to have any part of this plant. My source for this info is "The Flower Farmer" by Lynn Byczynski.

Positive mrs_colla On May 30, 2007, mrs_colla from Marin, CA (Zone 9b) wrote:

This flower is stunning, BUT you have to "catch it quickly", as the petals are blown away very easily, and then you miss the fun!
A positive rating because there are many flowerbuds, you can't miss them all!
My plant is now as tall as I am; 5'4!


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

Crescent City, California
San Anselmo, California
Jacksonville, Florida
Fairburn, Georgia
Pittsburg, Kansas
Paducah, Kentucky
Walkersville, Maryland
Burnsville, North Carolina
Creston, North Carolina
Elizabeth City, North Carolina
Moosic, Pennsylvania
Austin, Texas
Port Townsend, Washington
Vancouver, Washington

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