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Grindelia lanceolata - Nutt.

Common Name Rosin Weed, Narrowleaf gumweed, Texan gumweed
Family Asteraceae or Compositae
USDA hardiness 4-8
Known Hazards None known
Habitats Dry soils[235] on prairies and roadsides[222]. Calcareous soils in Texas[274].
Range Central and Southern N. America - Tennessee to Missouri, Kansas, Louisiana and Texas.
Edibility Rating    (1 of 5)
Other Uses    (1 of 5)
Weed Potential No
Medicinal Rating    (3 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Full sun
Grindelia lanceolata Rosin Weed,  Narrowleaf gumweed, Texan gumweed


USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 3: 371.
Grindelia lanceolata Rosin Weed,  Narrowleaf gumweed, Texan gumweed

 

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Summary


Physical Characteristics

 icon of manicon of flower
Grindelia lanceolata is a BIENNIAL/PERENNIAL growing to 1.5 m (5ft).
See above for USDA hardiness. It is hardy to UK zone 5. It is in flower from July to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils and can grow in very alkaline soils.
It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought.

UK Hardiness Map US Hardiness Map

Synonyms

Habitats

 Cultivated Beds;

Edible Uses

Edible Parts:
Edible Uses: Gum  Tea

The following reports are for the related G. squarrosa, they probably also apply to this species[222]. The fresh or dried leaves can be used to make an aromatic, slightly bitter but pleasing tea[183]. A sticky resinous sap that covers the leaves can be used as a chewing gum substitute[183].

References   More on Edible Uses

Medicinal Uses

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Antispasmodic  Eczema  Expectorant  Sedative

The following reports are for the related G. squarrosa, they also apply to this species[222]. Rosin weed was used by the native North American Indians to treat bronchial problems and also skin afflictions such as reactions to poison ivy[254]. It is still used in modern herbalism where it is valued especially as a treatment for bronchial asthma and for states where phlegm in the airways impedes respiration[254]. In addition, it is believed to desensitize the nerve endings in the bronchial tree and slow the heart rate, thus leading to easier breathing[254]. The plant merits investigation as a treatment for asthma[222]. The herb is contraindicated for patients with kidney or heart complaints[254]. The dried leaves and flowering tops are antiasthmatic, anti-inflammatory, antispasmodic, expectorant and sedative[4, 46, 207, 212, 238, 254]. The principal use of this herb is in the treatment of bronchial catarrh, especially when there is an asthmatic tendency, it is also used to treat whooping cough and cystitis[4, 254]. The active principle is excreted from the kidneys, and this sometimes produces signs of renal irritation[4, 238]. Externally, the plant is used as a poultice to treat burns, poison ivy rash, dermatitis, eczema and skin eruptions[212, 213, 222, 238]. The plant is harvested when in full bloom and can be used fresh as a poultice or dried for infusions etc[254]. A fluid extract is prepared by placing the freshly gathered leaves and flowers in a small quantity of simmering water for about 15 minutes[213]. A homeopathic remedy is prepared from the leaves and flowering stems[4].

References   More on Medicinal Uses

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Other Uses

Dye  Gum

The following report is for the related G. squarrosa, it probably also applies to this species[222]. Yellow and green dyes are obtained from the flowering heads and pods[168]. Aromatic.

Special Uses

References   More on Other Uses

Cultivation details

Succeeds in any well-drained soil in full sun[200]. Does well on dry sandy banks and in poor soils[200]. Grows mainly in calacareous soils in the wild[274]. Prefers a peaty loam soil[1]. This is one of the first species to invade disturbed or denuded ground and often becomes a serious weed of grazing land[212]. A very polymorphic plant[43].

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Propagation

Seed - sow autumn or spring in a cool greenhouse and only just cover the seed. Prick out the plants into individual pots when they are large enough to handle and plant them out into their permanent positions in early summer. Division as new growth commences in the spring. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring. Cuttings.

Other Names

If available other names are mentioned here

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Found In

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

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 NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Grindelia camporumGumplant, Great Valley gumweed, Bract gumweedAnnual/Perennial1.2 7-10  LMNDM031
Grindelia hirsutulaGumweed, Gum PlantPerennial1.0 8-11 FLMNDM033
Grindelia humilisHairy GumweedPerennial1.5 7-10  LMNDM021
Grindelia robustaGreat Valley GumweedPerennial0.6 6-9  LMNDM121
Grindelia squarrosaRosin Weed, Curlycup gumweedBiennial/Perennial1.0 3-7  LMNDM231

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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Expert comment

Author

Nutt.

Botanical References

43200235

Links / References

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