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Lupinus arboreus - Sims.
                 
Common Name Tree Lupin, Yellow bush lupine
Family Fabaceae or Leguminosae
USDA hardiness 7-10
Known Hazards The seed of many lupin species contain bitter-tasting toxic alkaloids, though there are often sweet varieties within that species that are completely wholesome[65, 76]. Taste is a very clear indicator. These toxic alkaloids can be leeched out of the seed by soaking it overnight and discarding the soak water. It may also be necessary to change the water once during cooking. Fungal toxins also readily invade the crushed seed and can cause chronic illness[65].
Habitats Stable sand dunes, coastal scrub and pine forest close to the coast. Naturalized by the sea in S. England[184].
Range South-western N. America - California to Oregon. Naturalized in S. England.
Edibility Rating  
Other Uses  
Weed Potential Yes
Medicinal Rating  
Care
Frost Hardy Well drained soil Moist Soil Full sun

Summary

Lupinus arboreus Tree Lupin,  Yellow bush lupine


Lupinus arboreus Tree Lupin,  Yellow bush lupine
   
Physical Characteristics
 icon of manicon of shrub
Lupinus arboreus is an evergreen Shrub growing to 1.5 m (5ft) by 1.2 m (4ft in) at a fast rate.
It is hardy to zone (UK) 8. It is in leaf 12-Jan It is in flower from May to August. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees.It can fix Nitrogen.
Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought. The plant can tolerate maritime exposure.

Synonyms

Habitats
Woodland Garden Sunny Edge; Cultivated Beds;
Edible Uses
None known
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.



None known
Other Uses
Dye;  Pioneer;  Soil reclamation;  String.

A bright yellow dye is obtained from the flowers[168]. The root fibres have been used to make a string for making nets etc[257]. Plants are used in land reclamation schemes to stabilize sandy soils and dunes[200]. Because they are fast growing and tolerant of maritime exposure, they quickly provide shelter for other plants as well as enriching the soil with nitrogen[K]. An excellent pioneering plant in permaculture, even in exposed areas it grows rapidly to its maximum height of about 1.5 metres and will give shelter to enable other less tolerant plants to become established. It is especially useful for helping the establishment of shrubs and herbaceous perennials in small gardens[K].
Cultivation details
Requires a well-drained dry or moist soil in a sunny position[11, 182]. Prefers an alkaline soil[188]. Grows well near the coast[11], resisting maritime exposure. Established plants are drought tolerant[190]. Plants can be grown in quite coarse grass, which can be cut annually in the autumn[233]. Hardy to about -15°c[184, 200]. Plants are hardy in all but severe winters in Britain[200], though they become less hardy with age[11]. A fast-growing but short-lived plant[182], especially when growing in rich soils[11]. Plants have reached 2.7 metres tall and wide within 4 years from seed in a rich soil, flowering and producing seed prolifically[11]. Plants self-sow when in a suitable position[200]. The flowers bear the fragrance of white clover[245]. 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].
Propagation
Pre-soak the seed for 24 hours in warm water and then sow in early spring in a greenhouse[1, 200]. Germination should take place within a couple of weeks. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in early summer. It should also be possible to sow the seed in situ in mid to late spring. Protect the seed from mice. Cuttings of short side-shoots with a heel, July/August in a frame[11].

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Other Names
Found In
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 it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Lupinus albusWhite Lupin41
Lupinus albus graecus 40
Lupinus angustifoliusBlue Lupin, Narrowleaf lupine40
Lupinus hirsutus 20
Lupinus littoralisSeashore Lupine20
Lupinus luteusYellow Lupin, European yellow lupine30
Lupinus mutabilisPearl Lupin, Tarwi50
Lupinus nootkatensisBlue Lupine, Nootka lupine30
Lupinus perennisSundial Lupine31
Lupinus polyphyllusBig-Leaf Lupin, Lupine11
Lupinus tauris 00
Lupinus termisWhite Lupin20
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Author
Sims.
Botanical References
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Subject : Lupinus arboreus  

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