Sharwil: Orig in Redland Bay,Queensland, Austr. by Frank V. Sharpe of Clayfield, Brisbane. Introd. there in 1954; now grown in three stages in AUS, in Spain,&in the U.S. in FL & CA. Chance seedling;selected 1951. Fruit 7-13 oz; somewhat more ovoid than Fuerte; skin green, thickness med.; seed sm., market quality excellent; season Aug.- Nov. in AUS.(Fuerte's season there is April-July); resembles Fuerte. Tree: hardy; growth dwarf; produces crops regularly; flower group A. (B&O Register) Some commercial activity in HI. Similar to Edranol but thicker skin & greener flesh near skin. Excellent flavor. Fruit is good nearly year round beginning March. 5 trees are med. sm. at South Coast Research Station, Irvine, CA. field 44, row 9, trees 7-11. (J.R. Frink 1998) Sharwil Origin, AUS.; Race, Guat.; Flower group, B (Lahav & Gazit)(originated in AUS);similar to Fuerte in shape but a little more oval; of med. size; skin rather rough, fairly thin; flesh rich in flavor, of high quality;15-26%oil. Season: May & June in New South Wales & Queensland. Tree bears regularly but not heavily. Represents 18-20% of all avocados in New South Wales & Queensland. Disease-free during ripening. (J.Morton 1987) Sharwil is a winter-spring bearing variety originally from Australia that has been well accepted by home gardeners and commercial growers in Kona. It is being marketed as a gourmet avocado because of its rich nutty flavor. Fruits are green skinned when mature. Type B flower.(Frankie's Nursery, Waimanalo, Hawaii,1999)
Greengold:Orig. in Haleakala Branch Station, Hawaii by R.A. Hamilton, Univ. of Hawaii. Introd in 1982.Sharwill x open pollinated seedling.Cross made in 1962; selected in 1970;tested as HAL R27T8.Fruit:size 12 oz; oval;skin green; seed 16% of fruit weight;flesh quality good; ripens Feb.- May, good handling quality. Tree: medium, upright; very productive, tendency to alternate bearing; vigor medium; tolerant to ethylene dibromide fumigation, anthracnose, thrips, and rust mite damage. (B&O Register) A few trees are growing at South Coast Research Station, Irvine, CA. In field 44, row 13, #6 &13 are two newly grafted Green Gold trees. (J.R. Frink 1998) Origin, HI; Race, Guat.; Flowering group, A (Lahav & Gazit) Green Gold is a Sharwil selection developed by the University of Hawaii. Like the parent, the Green Gold is pyriform shaped, rich and nutty, with a small seed. It is a prolific bearer maturing its fruits primarily during the spring months. Type A flower.( Frankie's Nursery, Waimanalo, Hawaii 1999)
I prefer Greengold compared to a still excellent Sharwil. In our climate (San Luis Obispo County) both do well.