Most Cold Hardy Avocado for the Pacific Northwest?

Hi im New to this Forum, but it looks pretty cool so far,
I have a question for you Avocado growers, If you dont know about the Pacific Northwest, it can be cool, wet rainy and moist during the winter time, having high temps in the 40's and low temps in the 40's or 30's. During a cold snap, which might last 3 or 4 days at max, might have high temps in the low 30's to upper 20's and possibly even colder ..(it has gotten into the teens with radiational cooling) Anyway during the summer, its mild and warm (like southern California weather. Anyway this is just a brief synopsis, and I thought with conditions as of such, which Avocado would you suggest that I try out in my Portland, OR area landscape? Thanks and I will contribute more as time goes on, Again I am new with this forum,
Thanks!
John

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CULTIVARS

Anaheim Origin Otto Keup, Anaheim, 1910. Guatemalan. Tree columnar, productive. Fruit very large, to 24 oz., elongated glossy green, seed small, oil 15%. Tenderest of cvs. for coast only. To 32° F. Season July.

Bacon Origin James Bacon, Buena Park, 1954. Hybrid. Tree broad, productive. Fruit small to medium, to 12 oz., round-ovoid, smooth green. Flesh only fair, almost colorless,seed cavity molds rapidly. Hardy for Bay Area, Central Valley. To 25° F. Season December.

Creamhart Origin Orton Englehart, Escondido,1969. Hybrid. Seedling of Reed. Tree open, upright, branching. Fruit medium, to 14 oz., skin green flesh extraordinarily pale,buttery, nearly fiberless. Not alternate bearing. To 30° F. Season April - July.

Duke Origin Bangor (Oroville), 1912. Tree vigorous, open, resists wind. Fruit small, 12 oz., elongated pyriform, waxy green, skin paper-thin. Flesh excellent, oil 21%. Seeds commonly used for rootstocks, resist root rot. Extraordinarily hardy, recovers quickly from freeze, to 22° F. Season October

Fuerte Origin Atlixco, Mexico, intro. Carl Schmidt, 1911. Hybrid. Tree open, spreading, tall. Fruit large to very large, 16 oz., elongated pyriform, skin dark green with numerous small raised pale spots, waxy bloom, skin thin. Flesh good, oil 18%, seed medium. Formerly standard cv. of California industry. Tends to bear in alternate years, unproductive near coast or in north. To 26° F. Season December.

Ganter Origin Albert Rideout, Whittier, 1905. Mexican. Tree tall, spreading, open. Fruit small, to 8 oz., long pyriform, skin paper-thin, pale waxy green. Flesh good, oil 18%. Oldest avocado cv. in California. Quite hardy, for Central Valley floor and far north. To 23° F. Season October.

Gwen Origin Riverside, Robert Whitsell, 1982, patented. Seedling of Hass. Tree dwarf, to 14 ft., low vigor. Fruit small, to 8 oz., a Hass look alike, elongated green, flesh good. Most productive of dwarf avocados, best dwarf for outdoor use, also for containers, greenhouse. Not hardy, to 30° F. Season February - October.

Hass Origin Rudolph Hass, La Habra Heights, 1926. Seedling of Lyon. Guatemalan. Tree rather open, not tall. Fruit medium, to 12 oz., pyriform, skin thick, pebbled, coppery purple. Flesh good, oil 19%, seed fairly small. Currently the standard of the industry. To 26° F. Season July.

Jim Origin John Reinecke, San Diego, 1939. Hybrid. Tree upright. Fruit small to medium, to 10 oz., olive green, with long neck, oil 12%. To 26° F. Season June.

Lula Origin George Cellon, Miami, 1919. West Indian. Tree dense, broad, prolific. Fruit round, slightly pyriform, to 20 oz., slightly rough glossy green, oil 12%. Only West Indian type recommended for California, rather hardy, to 28° F. Season April.

Lyon Origin R. Lyon, Hollywood, 1908. Central American. Tree columnar, slow growing, difficult to propagate, often scion incompatible. Fruit commonly over 24 oz., dark glossy green, rough, pyriform, oil 21%. High quality. Tender, to 30° F. Season April.

Mexicola Origin Coolidge, Pasadena, 1910. Mexican. Tree tall and spreading, vigorous. Fruit small, 5 oz., round pyriform, skin paper-thin, purplish black, waxy bloom. Flesh highest quality, seed very large. Hardiest cv. known, seedlings useful as rootstocks in far north. Recovers rapidly from freeze. Defoliated at 20° F, trunk killed at 17° F. Season September.

Mexicola Grande Seedling selection of Mexicola. Mexican. Tree tall and spreading similar to Mexicola. Fruit 15% - 25% larger than Mexicola and somewhat rounder in shape with better seed/flesh ratio. Skin paper-thin, purple-black. High quality flesh with high oil content. Hardy to about 18° F.

Murrieta Green Origin Colima, Mexico, intro. by Juan Murrieta, 1910. Hybrid. Tree slow growing, easily trained. Fruit large, to 18 oz., oblate, green, resembling Fuerte. Flesh exceptional, oil 18%. Only cv. readily adaptable to espalier. For coast and intermediate. To 27° F. Season September.

Nabal Origin Antigua, Guatemala, intro. by F.W. Popenoe, 1917. Tree dense, columnar. Fruit handsome, large pyriform, to 17 oz., green, skin resembles Fuerte. Flesh exceptionally high quality, oil 16%. Young trees require pinching to force low branching. Tends to bear alternate years. To 27° F. Season July.

Pinkerton Origin John D. Pinkerton, Saticoy, 1972, patented. Guatemalan. Tree dense, productive. Fruit variable in size, 7 to 12 oz., skin thick, pebbled, green. To 30° F. Season November.

Queen Origin Antigua, Guatemala, intro. by E.E. Knight, 1914. Guatemalan. Tree broad. Fruit exceptionally large, to 24 oz., elongated, purple, flesh excellent, oil 13%. Fairly hardy for large cv., worth trying in Bay Area. To 26° F. Season August.

Puebla Origin Atlixco, Mexico, intro. by Carl Schmidt, 1911. Mexican. Tree broad, high branching. Fruit beautiful, medium to large, to 18 oz., ovoid, skin thin, lacquered maroon purple. Flesh excellent, oil 20%. Least hardy Mexican type, to 29° F. Season December.

Reed Origin James S. Reed, Carlsbad, 1948. Hybrid. Tree columnar. Fruit large, to 15 oz., round, skin thick, pebbled, green. Flesh good. To 30° F. Season August.

Rincon Origin Carlsbad, Sam Thompson, 1944. Hybrid. Tree small. Fruit small to medium, 10 oz., green, resembling Fuerte. Flesh good. For coast, Santa Barbara and Ventura. To 27° F. Season January.

Ryan Origin Albert Rideout, Whittier, 1927. Hybrid. Tree low, spreading. Fruit medium, to 14 oz., elongated, otherwise resembles Hass, skin thick, pebbled, purple. Flesh good, oil 25%. For Inland Empire, Bay Area. To 26° F Season August.

Spinks Origin E. Bradbury, Bradbury, 1911. Hybrid. Tree spreading. Fruit medium, to 15 oz., round with small neck, tangelo shaped. Lacquered, coppery purple, outstanding flavor, oil 16%. To 27° F. Season April.

Topa Topa Origin E.S. Thatcher, Ojai, 1912. Mexican. Tree columnar, vigorous. Fruit handsome, elongated pyriform, small to medium, 8 oz., smooth dark purple with white waxy bloom. Skin paper-thin. Flesh rather poor, oil 15%, seed elongated. Seedlings commonly used for rootstocks. Hardy, for far north. To 23° F.

Whitsell Origin Robert Whitsell, Riverside,1982, patented. Hybrid. Hass seedling. Tree dwarf, to 12 feet, low vigor. Fruit small, 6 oz., elongated Hass look alike. Flesh good. Bears in alternate years. For containers and greenhouse only, not hardy. To 30° F. February to October.

Wurtz (syn. Littlecado) Origin Roy Wurtz, Encinitas, 1935. Hybrid. Tree prostrate, difficult to train, low vigor. Fruit dark green, medium, to 10 oz. For containers and greenhouse. To 26° F. Season July.

Zutano Origin R.L. Ruitt, Fallbrook, 1926. Hybrid. Tree columnar. Fruit small to medium, to 10 oz. elongated smooth green, resembles Fuerte but inferior, has fibers. Hardy for Bay Area, Central Valley. To 25° F. Season November.