Pacific Island Ecosystems at Risk (PIER)

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Psidium cattleianum
(dummy value for TaxonCode Authority; this value should be replaced!!).......Myrtaceae


High risk, score: 18 (Go to the risk assessment) Psidium cattleyanum Sabine; Psidium littorale Raddi var. longipes (O. Berg) Fosb.; Psidium littorale Raddi

Chinese: cao mei fan shi liu

English: Cattley guava, cherry guava, Chinese cherry guava, Chinese guava, purple guava, purple strawberry guava, red strawberry guava, small guava, strawberry guava, yellow Cattley guava, yellow strawberry guava

Fijian: ngguava

French: goyave de Chine jaune, goyave de Chine rouge, goyavier, goyavier de Chine, goyavier-fraise

Hawaiian: waiawī ‘ula‘ula

Maori (Cook Islands): tū‘ava papa'ā, tuava papa'ā, tuava papa'ā, tūava papa'ā, tūava papa'ā, tūvava papa'ā

Pohnpeian: kuwahpa

Samoan: ku‘ava

Spanish: guayaba, guayabo pequeño

Tahitian: tuava popa'a, tuava tinito, tuvava tinito

"Shrubs or small trees 2-6 m tall; young branches terete, sparsely puberulent when young, soon glabrate.  Leaves aromatic, leathery, obovate to elliptic-obovate, 3.5-13.5 cm long, (2.5-) 3-6 cm wide, both surfaces with scarcely raised lateral veins, glabrous or glabrate, apex bluntly cuspidate, base attenuate to cuneate, petioles 5-10 mm long.  Flowers usually solitary in the leaf axils, peduncles 4-8 mm long; sepals ca. 4-5 mm long, persistent in fruit; petals white, obovate, ca. 5-7 mm long.  Berries red to purplish red or occasionally yellow, globose to obovoid or ellipsoid, glossy and smooth, 2-3 cm in diameter, the pulp white.  Seeds ca. 5 mm long, smooth"  (Wagner et al., 1999; p. 971).

"Evergreen shrub or slender tree 1-3 (-8) m high; branchlets cylindrical, smooth.  Leaves:  Dark green, glabrous, shiny, thick and leathery, veins not conspicuously impressed, long-tapering at the base.  Flowers:  White, ± 15 mm across, solitary.  Fruits:  Purplish-red berries, globose, cherry-sized, 20-30 mm long, flesh white, sweet"  (Henderson, 1995; p. 124).

"Arbuste à petit arbre de 2 à 6 m de hauteur, pouvant atteindre 10 m, reconnaissable à son écorce lisse brun-rosâtre, ses petites feuilles coriaces de couleur vert-foncé, à ses fleurs blanches solitaires et à ses fruits charnus et globuleux de couleur rouge à pourpre à maturité (parfois jaunes) et avec une pulpe blanchâtre contenant de nombreuses petites graines"  (Meyer, 2008; p. 33). "Forests and forest openings, mountain slopes.  A thicket forming, shade tolerant tree that is able to invade intact and undisturbed rainforest.  It is fast growing and produces dense populations of root suckers and seedlings.  The dense foliage shades out all other plants.  The soil surface is often covered by mats of feeder roots.  The tree accumulates a large amount of litter that suppresses the establishment and growth of native tree seedlings"  (Weber, 2003; p. 348).  Tolerates shade and is a serious pest in both pastures and rain forests  (Motooka et al., 2003).

Favors moist or wet slopes. Produces dense thickets of small-stemmed plants. Density of stands and allelopathic characteristics inhibit other species. Strawberry guava is found in Hawai‘i between 150-1,300 m, principally in rain forest habitats (C. W. Smith, 1985; p. 200), and to 1000 m in French Polynesia.  In Fiji, "A locally naturalized shrub or small tree 2-6 m high occurring near sea level or at low elevations, usually in beach thickets"  (A. C. Smith, 1985; p. 308). In New Caledonia, "est peu cultivé mais parfois naturalisé" (MacKee, 1994; p. 106).  In Mauritius, "invading upland evergreen wet forest, lower montane forest and wet forest, including areas with low disturbance"  (Cronk & Fuller, 2001; p. 113). Seeds and suckers. Fruits are dispersed by birds and pigs. Also reportedly spread by cattle (Welsh, 1989; p. 200). Eastern Brazil and northeastern Uruguay (GRIN).
Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Pacific offshore islands)
Lord Howe Island
Lord Howe Island introduced
Pickard, J. (1984) (p. 207)
Australia (Pacific offshore islands)
Lord Howe Island
Lord Howe Island introduced
invasive
Orchard, Anthony E., ed. (1994) (p. 20)
"Spread by cattle and birds, and growing so thickly that it crowds out any other plant". Vouchers cited: P.S. Green 2035 (K), A.C. Beauglehole 5838 (MEL), B. Conn 3572 (NSW)
Australia (Pacific offshore islands)
Norfolk Islands
Norfolk Island introduced
invasive
Ziesing, P. (1997) (pp. 22-23)
Australia (Pacific offshore islands)
Norfolk Islands
Norfolk Island introduced
invasive
Orchard, Anthony E., ed. (1994) (p. 9)
Var. cattleianum "Spread by cattle and birds, and growing so thickly that it crowds out any other plant". Vouchers cited: P.S. Green 2413 (K), M. Lazarides 8024 (CANB, K), G. Uhe 1105 (K); var. littorale Vouchers cited: P.S. Green 2414 (K), W.R. Sykes NI 383 (CHR), W.R. Sykes 878/87 (CHR)
Chile (offshore islands)
Rapa Nui (Easter) Island
Rapa Nui (Easter) Island (Isla de Pasqua) introduced
cultivated
Meyer, Jean-Yves (2008) (pp. 33-34, 43)
"Non citée par Zizka (1991), il y aurait « une seule plantation subsistant à Vaitea » (Lefeuvre et al., 2005; page 47)" (Meyer, 2008; p. 34).
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
cultivated
Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
cultivated
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (pp. 495, 541, 556)
"En RC, está presente en varios jardines del pueblo de San Juan Bautista.  Es una especie peligrosa, de la misma familia que la luma endémica [Myrceugenia fernandeziana (Hook & Arn.) Johow], que debe ser vigilada muy de cerca y mantenida rigurosamente dentro de los jardines".
Cook Islands
Southern Cook Islands
‘Atiu Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Mangaia Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Mangaia Island introduced
invasive
Space, James C./Flynn, Tim (2002) (p. 9)
Cook Islands
Southern Cook Islands
Ma‘uke Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Ma‘uke Island introduced
cultivated
Space, James C./Flynn, Tim (2002) (p. 9)
Cook Islands
Southern Cook Islands
Miti‘aro Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Miti‘aro Island introduced
invasive
Space, James C./Flynn, Tim (2002) (p. 9)
Cook Islands
Southern Cook Islands
Rarotonga Island introduced
invasive
Meyer, Jean-Yves (2000) (p. 89)
Cook Islands
Southern Cook Islands
Rarotonga Island   McCormack, Gerald (2013)
Cook Islands
Southern Cook Islands
Rarotonga Island introduced
invasive
Space, James C./Flynn, Tim (2002) (p. 9)
Cook Islands
Southern Cook Islands
Rarotonga Island   Bishop Museum (Honolulu) (1929) (voucher ID: BISH 166373)
Taxon name on voucher: Psidium cattleianum Sabine
Cook Islands
Southern Cook Islands
Rarotonga Island   Bishop Museum (Honolulu) (1990) (voucher ID: BISH 664840)
Taxon name on voucher: Psidium cattleianum Sabine
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 192)
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
Meyer, Jean-Yves (2000) (p. 90)
"Potential invader"
Federated States of Micronesia
Pohnpei Islands
Pohnpei Island introduced
invasive
cultivated
Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 117)
Voucher cited: R. Lengsi 48 (NY)
Naturalized
Fiji
Fiji Islands
Viti Levu Island introduced
invasive
Smith, Albert C. (1985) (p. 308)
Vouchers cited: Greenwood 1026, Smith 9509, Vaughan 3446a, DF 348 (Damanu 37), DA 9177 (MccKee 2741), DA 11464, DA 12510, DA 6035
Fiji
Fiji Islands
Viti Levu Island   Bishop Museum (Honolulu) (1943) (voucher ID: BISH 166402)
Taxon name on voucher: Psidium cattleianum Sabine
Fiji
Fiji Islands
Viti Levu Island   Bishop Museum (Honolulu) (1953) (voucher ID: BISH 166403)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Marquesas Islands
Fatu Hiva Island introduced
invasive
Lorence, David H./Wagner, Warren L. (2013)
French Polynesia
Marquesas Islands
Fatu Hiva Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 7331 (PAP)
Naturalisée, menace pour la biodiversité.
French Polynesia
Marquesas Islands
Fatu Hiva Island   Bishop Museum (Honolulu) (1986) (voucher ID: BISH 546556)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Marquesas Islands
Fatu Hiva Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1988) (voucher ID: PTBG 6241)
Taxon name on voucher: Psidium cattleianum
French Polynesia
Marquesas Islands
Hiva Oa Island introduced
invasive
Lorence, David H./Wagner, Warren L. (2013)
French Polynesia
Society Islands
Moorea Island   Fosberg, F. R. (1997) (p. 82)
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
cultivated
Welsh, S. L. (1998) (p. 200)
Vouchers cited: Moore 227, Florence 3310
French Polynesia
Society Islands
Raiatea (Havai) Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Vouchers cited: J. Florence 8992 (PAP), J. Florence 11888 (PAP)
Naturalisée, Menace pour la biodiversité
French Polynesia
Society Islands
Raiatea (Havai) Island   Bishop Museum (Honolulu) (1993) (voucher ID: BISH 658365)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Society Islands
Taha‘a Island   Fosberg, F. R. (1997) (p. 82)
French Polynesia
Society Islands
Tahiti Island introduced
invasive
cultivated
Welsh, S. L. (1998) (p. 200)
Voucher cited: Florence 3310
French Polynesia
Society Islands
Tahiti Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Vouchers cited: J. Florence 2301 (PAP), J. Florence 3310 (PAP), J. Florence 4485 (PAP)
Naturalisée. Menace pour la biodiversité.
French Polynesia
Society Islands
Tahiti Island   Bishop Museum (Honolulu) (1982) (voucher ID: BISH 493562)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Society Islands
Tahiti Island   Bishop Museum (Honolulu) (1983) (voucher ID: BISH 555129)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Society Islands
Tahiti Island   Bishop Museum (Honolulu) (1982) (voucher ID: BISH 698734)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Society Islands
Tahiti Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1981) (voucher ID: PTBG 37693)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Austral (Tubuai) Islands
Rapa Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Vouchers cited: J. Florence 6237 (PAP), J. Florence 6320 (PAP), J. Florence 6336 (PAP)
Naturalisée, menace pour la biodiversité,
French Polynesia
Austral (Tubuai) Islands
Rapa Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 493204)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Austral (Tubuai) Islands
Rapa Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 493219)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Austral (Tubuai) Islands
Rapa Island   Bishop Museum (Honolulu) (1984) (voucher ID: BISH 493225)
Taxon name on voucher: Psidium cattleianum Sabine
French Polynesia
Austral (Tubuai) Islands
Tubuai Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence & W.R. Sykes 11136 (PAP)
Naturalisée, menace pour la biodiversité,
French Polynesia
Austral (Tubuai) Islands
Tubuai Island   Bishop Museum (Honolulu) (1992) (voucher ID: BISH 643733)
Taxon name on voucher: Psidium cattleianum Sabine
Guam
Guam Island
Guam Island   Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
State of Hawaii
Hawaiian Islands
Lāna‘i Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 971)
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands introduced
invasive
Toyoda, Takeshi (2003) (p. 284)
Naturalized
Japan (offshore islands)
Ogasawara (Bonin) Islands
Bonin (Ogasawara) Islands introduced
Kato, Hidetoshi (2007)
As Psidium littorale Raddi
New Caledonia
Îles Loyauté (Loyalte Islands)
Île Lifou introduced
cultivated
MacKee, H. S. (1994) (p. 106)
Voucher cited: Däniker 3140 (Z)
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
invasive
cultivated
MacKee, H. S. (1994) (p. 106)
Vouchers cited: Pancher s.n., Däniker 1167, MacKee 10002, Sévenet in MacKee 29765
Spontané
New Caledonia
New Caledonia Archipelago
Île Grande Terre   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1980) (voucher ID: PTBG 32374)
Taxon name on voucher: Psidium cattleianum
New Zealand (offshore islands)
Kermadec Islands
Raoul Island introduced
invasive
Sykes, W. R. (1977) (p. 120)
New Zealand (offshore islands)
Kermadec Islands
Raoul Island introduced
invasive
Sykes, W. R./West, C. J. (1996) (p. 456)
Subject of eradication program.
New Zealand (offshore islands)
Kermadec Islands
Raoul Island introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 866)
"Cultivation escape in and around old orchards and to a limited extent in scrub along roadside and in indigenous forest".
Palau
Palau (Belau ) (main island group)
Koror (Oreor) Island introduced
Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 192)
Reported present by Fosberg et al. (1979) but not seen by Space et al. (2003).
Papua New Guinea
Bismarck Archipelago
Bismarck Archipelago introduced
Peekel, P. G. [translated by E. E. Henty] (1984) (p. 408)
Rare.
Pitcairn Islands
Pitcairn Islands
Pitcairn Island introduced
invasive
Meyer, Jean-Yves (2000) (p. 104)
Pitcairn Islands
Pitcairn Islands
Pitcairn Island introduced
invasive
Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013)
Voucher cited: J. Florence 10751 (PAP)
Naturalisée, menace pour la biodiversité.
Pitcairn Islands
Pitcairn Islands
Pitcairn Island   Bishop Museum (Honolulu) (1991) (voucher ID: BISH 643372)
Taxon name on voucher: Psidium cattleianum Sabine
Samoa
Western Samoa Islands
Upolu Island introduced
invasive
Space, James C./Flynn, Tim (2002) (p. 10)
Samoa
Western Samoa Islands
Upolu Island   Bishop Museum (Honolulu) (1968) (voucher ID: BISH 28949)
Taxon name on voucher: Psidium cattleianum Sabine
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Northern Territory introduced
cultivated
Csurhes, S./Edwards, R. (1998) (p. 192)
Australia
Australia (continental)
Queensland introduced
invasive
cultivated
Csurhes, S./Edwards, R. (1998) (p. 192)
China
China
China (People's Republic of) introduced
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
As Psidium cattleyanum Sabine. Cultivated in Guangdong, Hainan and Yunnan.
China
China
Hong Kong introduced
cultivated
Wu, Te-lin (2001) (p. 163)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 186)
As Psidium littorale Raddi
New Zealand
New Zealand
New Zealand (country) introduced
invasive
cultivated
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 866)
"Cultivation escape in and around old orchards and to a limited extent in scrub along roadside and in indigenous forest".
Taiwan
Taiwan Island
Taiwan Island introduced
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
As Psidium cattleyanum Sabine
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia (Indian Ocean offshore islands)
Christmas Island Group
Christmas Island introduced
invasive
cultivated
Swarbrick, J. T. (1997) (p. 125)
Comoros
Comoro Islands
Anjouan (Nzwani) Island introduced
invasive
Vos, P. (2004) (p. 6)
Comoros
Comoro Islands
Grande Comore (Njazidja) Island introduced
invasive
Vos, P. (2004) (p. 6)
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
MacDonald, I. A. W./Thebaud, C./Strahm, W. A./Strasberg, D. (1991) (pp. 51-61)
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
cultivated
Lavergne, Christophe (2006)
"Cultivé/Très envahissant"
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
Kueffer, C./Lavergne, C. (2004) (p. 4)
La Réunion (France)
La Réunion Island
La Réunion Island introduced
invasive
Baret, Stephane/Rouget, Mathieu/Richardson, David M./Lavergne, Christophe/Egoh, Benis/Dupont, Joel/Strasberg, Dominique (2006) (p. 758)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
invasive
Lorence, D./Sussman, R. W. (1988) (pp. 187-204)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Mauritius Island introduced
invasive
Kueffer, C./Mauremootoo, J. (2004) (p. 6)
Mauritius
Mautitius Islands (Mauritius and Rodrigues)
Rodrigues Island introduced
invasive
Kueffer, C./Mauremootoo, J. (2004) (p. 6)
French Territory of Mayotte
Mayotte Islands
Mayotte Island introduced
cultivated
Comité français de l'Union Internationale pour la Conservation de la Nature en France (2013)
Potentiellement envahissant.
Seychelles
Seychelles Islands
Frégate Island   Robertson, S. A./Todd, D. M. (1983) (p. 55)
Seychelles
Seychelles Islands
Seychelles Islands introduced
invasive
Weber, Ewald (2003) (p. 348)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
USA (Florida) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
One of the worst invasive species in forests of Hawai‘i, Tahiti, La Réunion and Mauritius.

Found on Upolu, Samoa, at Malololelei on the cross-island road. This stand has been there for some time as the specimens are quite large (Space & Flynn, 2002).

Becoming quite common on Rarotonga, Cook Islands (Space & Flynn, 2002).

A potential threat on Pitcairn Island.  A few plants around one homestead (Pierre Binggeli, communication to Aliens listserver).

The fruit is a host to fruit flies (Motooka et al., 2003). Control information from the Bugwood Wiki.

"La lutte manuelle par arrachage des plantules et la lutte chimique par pulvérisation sur les souches ou par injection dans les troncs d’un herbicide à base de triclopyr et/ou dicamba sont réalisables. Le déracinage des arbres est rendu difficile en raison de système racinaire traçant"  (Meyer, 2008; p. 34).

Physical:  Pull or dig out small plants. Leave on site to rot down"  (Weedbusters New Zealand).

Chemical: "Strawberry guava is sensitive to foliar, frill and cut-surface applications of triclopyr, dicamba, and 2,4-D, in descending order of efficacy. Glyphosate was ineffective over the long term although early defoliation was severe. Strawberry guava was also sensitive to basal bark applications of 2,4-D, picloram, and triclopyr. Where applications were made during dry days, conventional basal bark applications of triclopyr at 2 % and 2,4-D at 4 % of respective products were effective at Kokee. Thin line applications of triclopyr ester, 20 % product in diesel or crop oil, were effective. Thin line vertical applications to opposite sides of stems to 5 inches diameter was also effective.  HAVO staff controlled strawberry guava with triclopyr amine at 50% product in water applied to cut stumps or to frills (Chris Zimmer, HAVO).  Responses to soil applications of tebuthiuron and hexazinone were erratic, excellent to poor"  (Motooka et al., 2003).

"1. Cut down and paint stump (all year round): metsulferon-methyl 600g/kg (1g/L) or Tordon (100ml/L). 
2. Cut and squirt (all year round): Make 1 cut every 100 mm around trunk. Apply 1g metsulferon-methyl 600g/kg (made to a paste) or 10ml Tordon Brushkiller or triclopyr 600 EC undiluted to each cut.
3. Spray (all year round): metsulferon-methyl 600g/kg (5g/10L + penetrant) or Tordon Brushkiller (30ml/10L)"  (Weedbusters New Zealand).

Biological:  "Four insect species were found that have significant deleterious effects and, therefore, considerable potential. A leaf gall produced by Tectococcus ovatus Hempel (Homoptera, Eriococcidae) is the most promising due to the damage caused and the ease of handling. Bud galls, precocious developments of the bud that terminate shoot growth, are formed in response to Dasineura gigantea (Diptera, Cecidomyiidae). A seed gall induced by Eurytoma psidii Thurbczy and Wikler, in ed. (Hymenoptera, Eurytomidae) cements groups of seeds together and prevents germination of all seeds in the fruit. These latter two species have a significant impact but are more difficult to manipulate in quarantine. A shoot gall produced by Eurytoma cattleianii or Eurytoma desantisi (Hymenoptera, Eurytomidae) terminates further growth of the shoot. The species are difficult to handle in the laboratory. The biological control potential of three additional species is discussed: a leaf gall formed in response to Neotrioza tavaresi (Hemiptera, Psyllidae) which, though species specific, has little impact on the plants; a sawfly, Haplostegus epimelas Konow (Hymenoptera, Pergidae) is unsuitable because it attacks commercial guava occasionally; and, a chrysomelid Lamprosoma azureum Germar (Coleoptera, Chrysomelldae) is not recommended because it attacks a number of myrtaceous species"  (Smith et al., 2002; p. 108).


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