Code
PSIGU
Growth form
Tree
Biological cycle
Perennial
Habitat
Terrestrial
PSIGU
Growth form
Tree
Biological cycle
Perennial
Habitat
Terrestrial
🗒 Synonyms
| No Data |
🗒 Common Names
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| French |
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| Other |
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📚 Overview
Diagnostic
Global description
Psidium guayava is a shrub or small tree up to 9 m tall, with a remarkable bark, smooth and coppery, detaching in patches. Branch of the year are pubescent with quadrangular section. Opposite simple leaves borne by a short petiole. Leaf blade oblong to elliptic 4 to 15 cm long and 3 to 5 cm wide, pubescent on the underside, obtuse or acute apex, base truncate, entire margin. Axillary flowers, solitary or grouped by 2 or 4, white to yellow at maturity 2 to 3 cm in diameter, borne by a peduncle of 1 to 2 cm. Corolla with 4 or 5 broad petals. Very many white stamens. The fruit is oval, yellow when ripe, 2 to 6 cm long with pink, yellow or white pulp containing many yellow seeds 3 mm long.
Psidium guayava is a shrub or small tree up to 9 m tall, with a remarkable bark, smooth and coppery, detaching in patches. Branch of the year are pubescent with quadrangular section. Opposite simple leaves borne by a short petiole. Leaf blade oblong to elliptic 4 to 15 cm long and 3 to 5 cm wide, pubescent on the underside, obtuse or acute apex, base truncate, entire margin. Axillary flowers, solitary or grouped by 2 or 4, white to yellow at maturity 2 to 3 cm in diameter, borne by a peduncle of 1 to 2 cm. Corolla with 4 or 5 broad petals. Very many white stamens. The fruit is oval, yellow when ripe, 2 to 6 cm long with pink, yellow or white pulp containing many yellow seeds 3 mm long.
Thomas Le Bourgeois
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| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
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No Data
📚 Nomenclature and Classification
No Data
📚 Natural History
Life Cycle
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Mayotte: Psidium guayava flowers and fruits all year round.
New Caledonia: Germination of Psidium guayava occurs at the beginning of the rainy season, flowering is observed at the end of the rainy season and fruit ripening takes place at the end of the dry season.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Cyclicity
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Psidium guayava is a perennial species and ensures its propagation by seeds. Very numerous, they are dispersed by birds and frugivorous animals. The cattle do not eat the leaves but are fond of the fruits and the dung is a real nursery for the seeds.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
Ecology
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Mayotte: Psidium guayava is an exotic species, often cultivated for its fruits and widely naturalized in degraded dry vegetation.
New Caledonia: Currently, Psidium guayava is most often found in isolated shrub formations. When it is not controlled, it ends up forming thick groves. With a high ecological plasticity, the shrub thrives in almost all types of soil (except mining grounds) up to 1500 m altitude. It resists drought thanks to its very deep root system.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
📚 Habitat and Distribution
General Habitat
Origin
Psidium guajava is native to tropical America.
Worldwide distribution
Introduced to Guam by the Spaniards, it spread to the Pacific, Asia and Africa.
Psidium guajava is native to tropical America.
Worldwide distribution
Introduced to Guam by the Spaniards, it spread to the Pacific, Asia and Africa.
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Occurrence
No Data
📚 Demography and Conservation
Risk Statement
Global harmfulness
Psidium guayava is one of 300 major invasive species of tropical Australia and Oceania including New Caledonia.
It should be noted that Psidium guayava is a host plant for several insects harmful to fruit crops (fruit flies).
Local harmfulness
Mayotte: Psidium guayava is a frequent weed, it is present in 15% of cultivated plots. It develops especially in pineapple and ylang plantations. It is mainly present in the center of the island, but it can be found in the north and the south.
New Caledonia: Psidium guayava was introduced as a fruit tree in 1863; it has become a plague on pastures.
South Africa: Psidium guayava competes with and replaces native species. Dense stands along watercourses and the edges of wetlands are likely to consume large quantities of water.
Wiktrop
| Attributions | Wiktrop |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Uses and Management
Management
Local control
New Caledonia: Psidium guayava is a vigorous and resistant shrub which is difficult to eradicate; we can limit its proliferation by reducing the production of fruits and seeds. Contaminated plots should not be contaminated with animals from infested plots. Regular maintenance by rotary grinding before fruiting will promote better growth of the pasture and slow down the spread of the guava, without eradicating it. Control will be more effective with a spray herbicide treatment on regrowths after rotary grinding at the end of the rainy season (triclopyr-based brushcutter, triclopyr + picloram). For large individuals, a brush treatment on cut stump or debarked trunk will be necessary (see table for products and doses).
New Caledonia: Psidium guayava is a vigorous and resistant shrub which is difficult to eradicate; we can limit its proliferation by reducing the production of fruits and seeds. Contaminated plots should not be contaminated with animals from infested plots. Regular maintenance by rotary grinding before fruiting will promote better growth of the pasture and slow down the spread of the guava, without eradicating it. Control will be more effective with a spray herbicide treatment on regrowths after rotary grinding at the end of the rainy season (triclopyr-based brushcutter, triclopyr + picloram). For large individuals, a brush treatment on cut stump or debarked trunk will be necessary (see table for products and doses).
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
No Data
📚 Information Listing
Global Biodiversity Information Facility (GBIF)
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
There is content in another language. Please click here to read it. (Français)
References
- CABI https://www.cabi.org/isc/datasheet/45141
- Blanfort, V., F. Desmoulins, J. Prosperi, T. Le Bourgeois, R. Guiglion and P. Grard (2010). AdvenPaC V.1.0 : Adventices et plantes à conflit d'intérêt des Pâturages de Nouvelle-Calédonie. Montpellier, France, IAC, Cirad.http://idao.cirad.fr/applications
- Bosser, J., I. K. Fergusson and C. Soopramanien (Mult. an.). Flore des Mascareignes. La Réunion, Maurice, Rodrigues, MSIRI, IRD, Kew.
- Barthelat, F. 2019. La Flore illustrée de Mayotte. Meze, Paris, France, Collection Inventaires et Biodiversité, Biotope – Muséum national d’Histoire naturelle. 687 p.
- Huat, J., Nagy, M., Carpente, A., Schwartz, M., Le Bourgeois, T. & Marnotte, P. 2021. Guide de la flore spontanée des agrosystèmes de Mayotte. Montpellier, Cirad. 150 p.
- Invasives South Africa https://invasives.org.za/fact-sheet/guava/
Information Listing > References
- CABI https://www.cabi.org/isc/datasheet/45141
- Blanfort, V., F. Desmoulins, J. Prosperi, T. Le Bourgeois, R. Guiglion and P. Grard (2010). AdvenPaC V.1.0 : Adventices et plantes à conflit d'intérêt des Pâturages de Nouvelle-Calédonie. Montpellier, France, IAC, Cirad.http://idao.cirad.fr/applications
- Bosser, J., I. K. Fergusson and C. Soopramanien (Mult. an.). Flore des Mascareignes. La Réunion, Maurice, Rodrigues, MSIRI, IRD, Kew.
- Barthelat, F. 2019. La Flore illustrée de Mayotte. Meze, Paris, France, Collection Inventaires et Biodiversité, Biotope – Muséum national d’Histoire naturelle. 687 p.
- Huat, J., Nagy, M., Carpente, A., Schwartz, M., Le Bourgeois, T. & Marnotte, P. 2021. Guide de la flore spontanée des agrosystèmes de Mayotte. Montpellier, Cirad. 150 p.
- Invasives South Africa https://invasives.org.za/fact-sheet/guava/
Images
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Herbarium pictures ReCOLNAT: https://explore.recolnat.org/search/botanique/simplequery=Psidium%2520guajava
Thomas Le Bourgeois
| Attributions | |
| Contributors | |
| Status | UNDER_CREATION |
| Licenses | CC_BY |
| References |
No Data
🐾 Taxonomy
| Root | Root |
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Myrtales |
| Family | Myrtaceae |
| Genus | Psidium |
| Species | Psidium guajava L. |
📊 Temporal Distribution
📷 Related Observations
