Weed Control by Species

Records herbicide and mechanical control methods, products, and satisfaction ratings for invasive weed species in Hawaiʻi, contributed by multiple partner organisations.

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403rows

88species, each with its own page

15organisations reporting

9active ingredients

Oct 2026last updated

By active ingredient

Triclopyr

Group 4

Synthetic auxin · some products labelled for aquatic sites

166 reports61 species3.8 / 5 average

Best on Acacia mearnsii, Acacia mangium, Ageratina riparia, Ageratina adenophora

Glyphosate

Group 9

EPSP synthase inhibitor · some products labelled for aquatic sites

83 reports44 species3.2 / 5 average

Best on Ageratina riparia, Ardisia crenata, Axonopus fissifolius, Cortaderia selloana

Imazapyr

Group 2

ALS inhibitor · some products labelled for aquatic sites

58 reports31 species3.5 / 5 average

Best on Ardisia elliptica, Cecropia obtusifolia, Coffea arabica, Grevillea robusta

Aminopyralid

Group 4

Synthetic auxin · no aquatic-labelled products

57 reports29 species3.3 / 5 average

Best on Cryptomeria japonica, Delairea odorata, Leucaena leucocephala, Morella faya

Sulfometuron-methyl

Group 2

ALS inhibitor · no aquatic-labelled products

6 reports2 species4.5 / 5 average

Best on Pterolepis glomerata, Chromolaena odorata

Fluazifop-P-butyl

Group 1

ACCase inhibitor · no aquatic-labelled products

5 reports3 species4.4 / 5 average

Best on Axonopus fissifolius, Paspalum conjugatum, Melinis minutiflora

Aminocyclopyrachlor

Group 4

Synthetic auxin · no aquatic-labelled products

4 reports4 species3.8 / 5 average

Best on Acacia confusa, Toona ciliata, Leucaena leucocephala, Corymbia citriodora

Metsulfuron-methyl

Group 2

ALS inhibitor · no aquatic-labelled products

1 report1 species4.0 / 5 average

Best on Hedychium gardnerianum

Clopyralid

Group 4

Synthetic auxin · no aquatic-labelled products

1 report0 species5.0 / 5 average

7 of 403

Species	Family	Common Name(s)	Organization	Control Technique	Cocktail	Satisfaction Rating	Size class (in regards to species)	Habitat Type	Trial or Observation?	Last Updated
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	25% garlon, 25% roundup 75% water	unsatisfactory results	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-15	+
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	50%garlon, 50% roundup	minimal satisfaction	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-14	+
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	50% Round-up pro	successful. Recommended method	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-13	+
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	100% Round-up pro	successful. Recommended method	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-12	+
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	50% Garlon 4	minimal satisfaction	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-11	+
Clusia rosea	Clusiaceae	Autograph tree	NTBG	drill	100% Garlon 4	moderate satisfaction	medium to huge. 1-70 trunks	MESIC	TRIAL	2018-04-10	+
Clusia rosea	Clusiaceae	Autograph tree	OANRP	IPA-Incision Point Application							+

Kept by UHELP. Ratings and notes are the reporting organisation’s own. For herbicides, always follow the product label — the label is the law.