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Oxalis grandis - Small

Common Name Great Yellow Woodsorrel
Family Oxalidaceae
USDA hardiness 5-7
Known Hazards The leaves contain oxalic acid, which gives them their sharp flavour. Perfectly all right in small quantities, the leaves should not be eaten in large amounts since oxalic acid can bind up the body's supply of calcium leading to nutritional deficiency. The quantity of oxalic acid will be reduced if the leaves are cooked. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[238].
Habitats Sandy woods, alluvial soils; 100–1100 m
Range Native to the eastern United States from Georgia north to Pennsylvania and Wisconsin, west as far as Louisiana.
Edibility Rating    (2 of 5)
Other Uses    (1 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care (info)
Fully Hardy Moist Soil Full shade Semi-shade
Oxalis grandis Great Yellow Woodsorrel


Paul Rothrock swbiodiversity.org
Oxalis grandis Great Yellow Woodsorrel
Paul Rothrock swbiodiversity.org

 

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Summary


Physical Characteristics

 icon of manicon of flower
Oxalis grandis is a ANNUAL/PERENNIAL growing to 0.2 m (0ft 8in) by 0.2 m (0ft 8in) at a fast rate.
It is hardy to zone (UK) 6.
It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in full shade (deep woodland) or semi-shade (light woodland). It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

O. recurva Trel. [Illegitimate]. Xanthoxalis grandis (Small) Small

Habitats

Edible Uses

Edible Parts: Flowers  Leaves
Edible Uses:

Leaves are tart [1-2]. Leaves - raw or cooked[2, 7, 12, 37]. A delicious lemony flavour, the leaves make a refreshing, thirst-quenching munch and are also added to salads, soups, sauces etc[183]. This leaf should be used in moderation[4, 5, 9, 76], see the notes above on toxicity. Flowers - raw. A decorative addition to salads[K].The plant can be toxic and only small amounts should be eaten. Large quantities may cause trembling, cramps, and staggering as in grazing animals.

References

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.


Some Oxalis species have medicinal properties but no information could be found for this species. For example Oxalis acetosella: The fresh or dried leaves are anodyne, antiscorbutic, astringent, diuretic, emmenagogue, expectorant, febrifuge, irritant and stomachic[4, 7, 9, 21]. A decoction is used in the treatment of fevers, both to quench the thirst and allay the fever[4]. Externally, the leaves are crushed and applied locally to dispel boils and abscesses, they also have an astringent affect on wounds[7]. When used internally, some caution is advised due to the oxalic acid content of the leaves[4], the plant is contra-indicated for people suffering from gastritis or a calculus condition[7].

References

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Other Uses

The juice of the leaves removes iron mould stains from linen[6, 66, 115]. Plants can be grown as a ground cover in woodland or under the shade of shrubs[208].

Special Uses

Food Forest  Ground Cover

References

Cultivation details

Annual or perennial herb preferring shade to semi-shade and a mesic - moist to slightly dry soil. For polyculture design as well as the above-ground architecture (form - tree, shrub etc. and size shown above) information on the habit and root pattern is also useful and given here if available. The plant growth habit is a runner spreading indefinitely by rhizomes or stolons [1-2]. The root pattern is rhizomatous with underground stems sending roots and shoots along their length [1-2]. Bloom Color: Yellow. Bloom Time: May to Sep.

References

Temperature Converter

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Plants For A Future have a number of books available in paperback and digital form. Book titles include Edible Plants, Edible Perennials, Edible Trees, and Woodland Gardening. Our new book to be released soon is Edible Shrubs.

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Propagation

Seed - best sown as soon as it is ripe in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle and plant them out in late spring or early summer. Division in spring. Very easy, larger divisions can be planted out direct into their permanent positions. We have found that it is better to pot up the smaller divisions and grow them on in light shade in a cold frame until they are well established before planting them out in late spring or early summer.

Other Names

If available other names are mentioned here

Great yellow wood-sorrel, Great yellow wood-sorrel, Large Yellow Wood-sorrel, Oxalis Sourgrass

Found In

Countries where the plant has been found are listed here if the information is available

USA

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.

None Known

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Oxalis acetosellaWood SorrelPerennial0.1 3-7 FLMHFSNM323
Oxalis adenophyllaSauer KleePerennial0.2 4-8  LMHSNM00 
Oxalis articulataPink SorrelPerennial0.2 7-10  LMNM30 
Oxalis barrelieriBarrelier's woodsorrelPerennial0.0 0-0  LMNDM20 
Oxalis bifida Bulb0.3 8-11  LMNDM20 
Oxalis corniculataYellow Sorrel, Creeping woodsorrelAnnual/Perennial0.1 4-8  LMHNDM220
Oxalis corymbosaLilac Oxalis, Pink woodsorrelPerennial0.2 7-10  LMHNDM20 
Oxalis deppeiIron Cross PlantBulb0.3 7-10  LMNM40 
Oxalis enneaphyllaScurvy GrassPerennial0.1 5-9  LMNDM20 
Oxalis europaea Annual/Perennial0.4 -  LMNDM20 
Oxalis exilisLeast Yellow Sorrel, Shady woodsorrelAnnual/Perennial0.1 4-8  LMHNDM22 
Oxalis frutescensShrubby woodsorrelPerennial0.0 0-0  LMNDM20 
Oxalis lasiandra Perennial0.3 8-11  LMSNM00 
Oxalis magellanica Perennial0.0 5-9  LMSNDM20 
Oxalis montanaMountain Wood SorrelPerennial0.1 0-0  LMHSM201
Oxalis oreganaRedwood SorrelPerennial0.2 6-9  LMHFSNM313
Oxalis pes-capraeBermuda ButtercupPerennial0.2 8-11  LMNDM20 
Oxalis strictaYellow Wood Sorrel, Common yellow oxalis, Common Yellow Wood Sorrel, OxalisAnnual0.3 0-0 FLMNDM210
Oxalis tetraphylla Perennial0.1 7-10  LMNDM30 
Oxalis triangularisOxalisPerennial0.2 10-11 MLMSNDM30 
Oxalis tuberosaOcaPerennial0.5 6-9  LMNM50 
Oxalis violaceaViolet Wood SorrelBulb0.3 4-8  LMHSNDM31 

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.

 

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