EVERGREEN

Plant Encyclopedia

Argemone hispida

Argemone hispida (rough pricklypoppy, "Shiroazamigeshi")

Japanese name: シロアザミゲシ (白薊罌粟)
Scientific name: Argemone hispida

Argemone hispida

[Overview]
A perennial about 60 cm tall.
In its native range it grows in arid regions.
Orange sap comes out when the stems or leaves are damaged.
The whole plant is densely covered with spines and stiff bristles.
Leaves are simple and alternate; those on the lower part of the stem are moderately pinnately lobed, and those on the upper part are shallowly lobed.
The leaves have white markings along the veins.
The leaf margins have sharp, strong spines.
The leaves on the upper part of the stem clasp the stem at the base.
A single flower is borne at the tip of the stem.
The flowers are about 7–10 cm across and white, with 4–6 petals.
The petals fall easily.
There are many stamens, and the stigma spreads radially.
The fruit is a capsule densely covered with spines.

[Cultivation]
Propagate from seed.
It multiplies readily by self-sown seed.
It has a taproot and dislikes transplanting, so sow directly.
It prefers a sunny, well-drained, dry site.
It is tolerant of dryness and weak in heat and humidity, so water after the soil has dried.
There are no particular pests or diseases.

Details

Names
English: rough pricklypoppy
Japanese: シロアザミゲシ(白薊罌粟)
Life form
Perennial
Habit
Terrestrial
Flowering season
June, July, August
Distribution or origin
Southern United States, Mexico
Height
600 mm
Leaf shape
Lobed leaf
Leaf arrangement
Alternate
Leaf margin
Spiny
Inflorescence
Solitary
Number of petals
4, 6
Flower color
White
Flower diameter
70–100
Leaf color
Green, White
Propagation
Seed
Sun exposure
Full sun
Water needs
Moderate
Soil needs
Required
Tolerance
Drought tolerance
Suitable uses
Potted plant, Flower bed

Translated from our Japanese encyclopedia. If anything differs, the Japanese page is correct.

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