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Summary

Bloom Color: Purple. Main Bloom Time: Early spring, Late spring, Mid spring. Form: Rounded, Upright or erect.

Physical Characteristics

Sophora secundiflora is an evergreen Tree growing to 10 m (32ft 10in) at a slow rate.
See above for USDA hardiness. It is hardy to UK zone 8. It is in leaf all year, in flower from April to May, and the seeds ripen in October. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
It can fix Nitrogen.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Broussonetia secundiflora. Virgilia secundiflora.

Plant Habitats

Woodland Garden Sunny Edge;

Edible Uses

None known

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.
Hallucinogenic Narcotic

Hallucinogenic, narcotic[82, 161, 192]. An infusion of the seeds is used[192, 200], half a seed is enough to produce intoxication[192]. An infusion of the ground up seed has also been applied to ears in the treatment of earaches[213, 257]. The seeds contain the highly poisonous alkaloid cytosine (or sophorine) - this substance is related to nicotine and acts violently in the human system[213].

References More on Medicinal Uses

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Other Uses

Dye Wood

Landscape Uses: Border, Espalier, Pest tolerant, Massing, Standard, Specimen, Street tree. A yellow dye is obtained from the wood[227]. Wood - very heavy, hard, close grained[82]. Of no commercial importance[227].

Special Uses

Espalier Nitrogen Fixer

References More on Other Uses

Cultivation details

Succeeds in a well-drained moderately fertile soil in full sun[200]. Succeeds in a hot dry position. Rather slow-growing and difficult to transplant[227]. A very ornamental plant[274]. This species has not been tried outdoors in Britain, it is possibly hardy if grown in the sunniest mildest areas of the country, or against a sunny wall in less mild areas[11]. It grows best in the warmer areas of the country where the wood will be more readily ripened and better able to withstand winter cold[219]. Plants should be container-grown and planted out whilst young, older plants do not transplant well[219]. The flowers have a powerful and delicious fragrance[82, 200], though some people find them offensive[227]. Plants in this genus are notably resistant to honey fungus[200]. This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[200]. Special Features: North American native, Fragrant flowers, Attractive flowers or blooms.

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Plant Propagation

Seed - best sown as soon as it is ripe in a greenhouse[200]. Pre-soak stored seed for 12 hours in hot (not boiling) water and sow in late winter in a greenhouse[78]. Prick out the seedlings as soon as they are large enough to handle into individual pots in the greenhouse, and grow them on for 2 years under protected conditions. Plant them out into their permanent positions in early summer of their third year. Cuttings of young shoots with a heel, July/August in a frame[11]. Air-layering[200].

Other Names

If available other names are mentioned here

Native Range

NORTHERN AMERICA: United States (New Mexico (southeast), Texas), Mexico (Chihuahua, Coahuila de Zaragoza, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas, Hidalgo, Puebla, Querétaro)

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
Acacia sophorae	Coastal Wattle, Acacia	Shrub	0.0	0-0		LMH	N	DM	2	0	3
Sophora davidii	Sophora	Shrub	2.5	5-8	S	LMH	N	DM	1	0
Sophora flavescens	Ku Shen, Shrubby sophora	Shrub	1.5	5-9	S	LMH	N	M	0	3	2
Sophora japonica	Japanese Pagoda Tree, Scholar Tree	Tree	20.0	4-9	F	LMH	N	M	2	3	2
Sophora mollis		Shrub	2.0	7-10		LMH	N	DM	1	0	2
Sophora moorcroftiana		Shrub	1.2	-		LMH	N	M	0	1	1
Sophora sericea	Silky Sophora	Perennial	0.3	-		LMH	N	DM	3	0
Sophora tetraptera	Kowhai	Tree	10.0	7-10	S	LMH	N	M	0	0	2
Sophora tonkinensis		Shrub	1.0	-		LMH	SN	M	0	2

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.

Sophora secundiflora - (Ortega.)Lag. ex DC.