WSU has basic information about growing Kiwi at http://cru.cahe.wsu.edu/CEPublications/eb1640/eb1640.html#kiwi.
Oregon State provides the following information about pollination:

For fruit to be produced, male and female vines must be present in a block and must flower at the same time. Male flowers produce viable pollen for only the first 2 to 3 days after opening. However, female flowers are receptive to pollen for 7 to 9 days after opening, even when the petals have started falling.

Pollination is extremely important in kiwifruit production. Large fruit contain 1,000 to 1,400 seeds (research on Hayward). If pollination is poor, fruit will have indentations (narrow valleys) on one side or be non-uniform in shape. If you cut through these fruit, you will find no seeds in these areas.

Kiwifruit flowers are pollinated mainly by insects, although wind may play a minor role. Honey bees are the main pollinator used in kiwifruit vineyards. Kiwifruit flowers do not produce nectar and are relatively unattractive to bees. About three to four hives per acre are needed to adequately pollinate kiwifruit. Place these in the vineyard no sooner than 10 percent bloom of the female vines.

In some years, you may have no male vines in flower as a result of winter injury to male plants (they are less hardy than the females). In this case, no naturally produced pollen will be available. To get a crop, the females will have to be pollinated artificially. Call your county Extension agent for more information on sources of pollen and methods of artificial pollination.

You might also find this article from The Olympian newspaper (May 16, 2009) of interest. It discusses hand pollination, general care, pruning and training.

Season All Season
Date 2008-01-31
Link to this record only (permalink)

The Washington Park Arboretum has many examples of Hamamelis mollis, or Chinese witch hazel (unless you meant Corylopsis sinensis or Loropetalum chinense, which also go by the common name 'Chinese witch hazel'). Kalmia latifolia (Mountain laurel) and Fothergilla (but not Fothergilla gardenii, which is Witch alder) are also in the Arboretum. The variegated kiwi, Actinidia kolomikta, used to be grown here at the Center for Urban Horticulture. Soft shield fern, or Polystichum setiferum, may be in the Arboretum, but is not listed, as it is not a woody plant. I consulted The Woody Plant Collection in the Washington Park Arboretum (not up-to-date, as it was published in 1994), so in some cases the plants may no longer be where they once were listed on maps. The trail map linked here only provides information on large collections of plants, but the book provides their location on a grid. You could go to the Arboretum and ask for assistance in locating the witch hazels (some are in the Witt Winter Garden, and others are in a grove on the south end of the park) and other plants.

All of these plants grow well in our area. I have a dwarf form of Fothergilla in my garden, and it has been thriving. I have also seen many of the other plants in your list growing happily in private gardens in Seattle. Since you wish to know what they look like, here are several links to additional information with pictures.

Hamamelis mollis picture 1
Picture 2
Picture 3
Picture 4

Fothergilla gardenii Picture 1
Picture 2

Kalmia latifolia Picture 1
Picture 2

Polystichum setiferum Picture 1 (from a local gardener)
Picture 2

Season All Season
Date 2007-07-12
Link to this record only (permalink)