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Tagetes micrantha - Cav.

Common Name Licorice marigold
Family Asteraceae or Compositae
USDA hardiness 7-9
Known Hazards We have no information on this species, though other members of the genus have an irritant sap that can cause dermatitis in sensitive people[238].
Habitats Disturbed sites, in open woodlands with scattered pines and junipers. Low areas and where puddles persist along the road.
Range Southern N. America - Mexico. An occasional casual in Britain[17].
Edibility Rating    (0 of 5)
Other Uses    (3 of 5)
Weed Potential No
Medicinal Rating    (1 of 5)
Care (info)
Fully Hardy Well drained soil Moist Soil Full sun
Tagetes micrantha Licorice marigold


Russ Kleinman, www.wnmu.edu
Tagetes micrantha Licorice marigold
Russ Kleinman, www.wnmu.edu

 

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Summary


Physical Characteristics

 icon of manicon of flower
Tagetes micrantha is a ANNUAL growing to 0.3 m (1ft).
See above for USDA hardiness. It is hardy to UK zone 7 and is frost tender. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
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

Tagetes fragrantissima Sessé & Moc.

Plant Habitats

 Cultivated Beds;

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.


The plant is used as a remedy for stomach complaints, colds and fevers[257].

References   More on Medicinal Uses

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Other Uses

Companion

Many members of this genus are widely used in companion planting schemes[238]. Secretions from the roots of growing plants have an insecticidal effect on the soil, effective against nematodes and to some extent against keeled slugs. These secretions are produced about 3 - 4 months after sowing[200]. These root secretions also have a herbicidal effect, inhibiting the growth of certain plants growing nearby. It has been found effective against perennial weeds such as Ranunculus ficaria (Celandine), Aegopodium podagraria Ground elder), Glechoma hederacea (Ground ivy), Agropyron repens (Couch grass) and Convolvulus arvensis (Field bindweed)[200, 238]. An essential oil distilled from the leaves and flowering stems, harvested when the plant is forming seeds, is used as an insect repellent[46, 61]. It is also used in perfumery[238]. Dried plants can be hung indoors as an insect repellent[238]. Dynamic accumulator.

Special Uses

Dynamic accumulator  Scented Plants

References   More on Other Uses

Cultivation details

Requires a well-drained moderately fertile soil in a sunny position[200]. Plants are not very resistant to frosts and need to be grown as half hardy annuals. Removing dead flowers before the seed is formed will extend the flowering season[188]. Most members of this genus are very good companion plants, see 'Other Uses' below for more details[238]. Plants are prone to slugs, snails and botrytis[188].

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

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Plant Propagation

Seed - sow March in a greenhouse. Only just cover the seed. Germination usually takes place within 2 weeks. When they are large enough to handle, prick the seedlings out into individual pots and plant them out after the last expected frosts.

Other Names

If available other names are mentioned here

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
Tagetes erectaAfrican Marigold, Aztec marigold, Big Marigold, American MarigoldAnnual1.0 2-11 MLMHNDM333
Tagetes filifoliaIrish LaceAnnual0.4 8-11  LMHNDM102
Tagetes lucidaMexican Tarragon, Sweetscented marigoldPerennial0.8 8-11  LMHNDM433
Tagetes minutaMuster-John-HenryAnnual1.2 8-11  LMHNDM223
Tagetes patulaFrench Marigold, Dwarf French MarigoldAnnual0.5 2-11 MLMHNDM224
Tagetes tenuifoliaLemon Marigold, Striped Mexican Marigold, Signet MarigoldAnnual0.8 2-11 MLMHNDM203

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.

 

Expert comment

Author

Cav.

Botanical References

17

Links / References

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