Sep 10
Host: Coconut and Oil palms mainly – but also may attack other palm species Distribution: South Pacific (American Samoa, others) and Guam. Damage: V-shaped cuts in the fronds or holes through the midrib Control: Eliminating the places where they breed and manually destroying adults and all stages of life cycle – eggs, larvae, and pupae. …
Sep 08
Graphiola leaf spot – Graphiola phoenicis Hosts: The primary hosts in Floridaare Phoenix species, especially Phoenix canariensis (Canary Island date palm) and Phoenix dactylifera (date palm). Distribution: Widely distributed throughout the date-palm growing world. Damage: Very small black, cup-shaped fungal bodies (sori) are present on leaf blade of the oldest leaves. This disease is primarily …
Sep 08
Acacia Psyllid – Psylla uncatoides Hosts: Acacia koa, Acacia koaia Distribution: Originates in southeast Australia. Also found in New Zealand, California, and Hawaii. Damage: Feeds primarily on the young terminal growth. Heavy infestations can severely defoliate and kill twigs and branches. Control: A biological control, Harmonia conformis, was successfully established in Hawaii in the 1970s. …
Sep 08
Gliocladium blight – Pink Rot of Palms Pathogen: Gliocladium vermoeseni (fungus) (recently renamed Nalanthamala vermoeseni). Hosts: Chamaedorea spp, Dypsis spp. (Areca palms, etc.), date palm, queen palm, Mexican fan palm, others. Symptoms: Invasive rot of buds, petioles, leaf blades, and trunks/stems, dark brown necrotic areas near the base of the stem, gummy exudates, premature death …
Sep 05
Boron Deficiency Hosts: Palms Symptoms Twists or bends in the stems, failure of apical meristems to fully open and expand, and leaf wrinkling or crumpling known as “accordion leaf”. There may be chlorosis in young leaves, shortening of terminal internodes, or “scorched” leaf tips. Fruits may abort prematurely due to functional failure of pollen tubes. In certain …
Aug 27
The City and County of Honolulu recently removed a monkeypod tree from Kipapa Park in Mililani. It had died due to vandalism. This is just one of many trees that have been vandalized recently. For TV coverage about the vandalism, click here. For more news about the vandalism, click here.
Aug 10
Congratulations to Jamilee Kempton on her fine performance at the Internation Tree Climbing Championship. She finished 10th out of 20 competitors. Not bad for her first year competing! For detailed results, click here.
Jul 17
The University of Hawaii College of Tropical Agriculture and Human Resources (CTAHR) and Kauai Community College’s Office of Continuing Education and Training (KCC OCET) will be holding a Landscapers’ Conference on August 6, 2013, at Kauai Community College. Participants can earn Pesticide Applicator CETs and LICT and Arborist CEUs. For more information and for the …
Jun 19
Jamilee Kempton, secretary of Aloha Arborist Association, won the Western Chapter International Society of Arboriculture (WCISA) Tree Climbing Championship Women’s Division which was held in Los Angeles, California the weekend of June 15-16, 2013. This was her first year competing. Jamilee will be representing WCISA at the International Tree Climbing Championship in Toronto, Ontario, Canada, …
Jun 07
The Hawaii Landscape & Irrigation Contractors Association (HLICA) will be holding Landscape Industry Certified Technician (LICT) [previously known as CLT] training classes at the Urban Garden Center in Pearl City beginning in June 2013. For more information and for the registration form, click here.