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Summary

Physical Characteristics

Meconopsis napaulensis is a PERENNIAL growing to 2 m (6ft) by 1 m (3ft 3in).
See above for USDA hardiness. It is hardy to UK zone 8. It is in flower in June, and the seeds ripen in August. The species is hermaphrodite (has both male and female organs).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils. It can grow in semi-shade (light woodland). It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

M. wallichii.

Plant Habitats

Woodland Garden Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Oil
Edible Uses: Oil

An edible oil is extracted from the seed[105, 177, 183].

References More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Narcotic

The root is used as a narcotic[240].

References More on Medicinal Uses

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Other Uses

Oil

None known

Special Uses

References More on Other Uses

Cultivation details

Grows best in a woodland soil in partial shade[1, 200]. The soil should be lime-free, moist, well-drained and moderately rich[200]. Dislikes full sun and windy positions[200]. This species is not hardy in the colder areas of the country, it tolerates temperatures down to between -5 and -10°c[200]. A very ornamental plant[1]. Monocarpic, the plants living for a number of years before flowering but then dying once they flower[200]. A fine plant for growing in open woodland[1]. Plants are subject to 'crown rot' when they are growing in damp conditions[1].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Plant Propagation

Seed - best sown in a cold frame as soon as it is ripe in late summer. Spring sown seed is slower to germinate[200]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer.

Other Names

If available other names are mentioned here

Native Range

TEMPERATE ASIA: China (Sichuan Sheng (southwest), Xizang Zizhiqu, Yunnan Sheng) TROPICAL ASIA: Bhutan, India (Arunachal Pradesh, Sikkim, Uttar Pradesh, West Bengal (north)), Nepal

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so itâ€™s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Growth	Soil	Shade	Moisture	Edible	Medicinal	Other
Meconopsis aculeata		Perennial	0.6	6-9		LMH	S	M	1	2
Meconopsis grandis	Blue Poppy	Perennial	1.0	4-8		LMH	S	M	1	0

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

Meconopsis napaulensis - DC.