2003 Great Plant Picks

Nancy Tom

It’s great to look at the new plant picks lists put out by nurseries and growers from near and far. But some of the most coveted advice gardeners get about plants is the advice from fellow gardeners. And that’s what makes this pick list so special.

The Elisabeth C. Miller Botanical Garden was the private garden of Elisabeth and Pendelton Miller. With stunning views of Puget Sound, this garden is known for its wide and varied selection of trees, shrubs, and woodland herbaceous perennials. In just three acres of gardens are over 3,600 taxa of plant material. Now the site is in the capable hands of a board of trustees who want nothing more than to educate Pacific Northwest gardeners about the plant material which thrives here.

This eliminates a lot of research work on our part. The list for 2003, like other years, was put together by nursery professionals, growers, horticulturists, avid gardeners and landscape and garden designers. Selections are made within three categories: trees and conifers, shrubs and vines and perennials and bulbs. You’ll find old favorites and newcomers alike, so there is something here for everyone and every type of need.

And, it’s accessible on-line at www.greatplantpicks.org. Don’t miss the separate pages for each plant describing culture, habit, usage and suitable companion plants. There’s even a picture. In fact, there’s so much information that comfortable seating is a must when visiting this website!

Some Sunny Considerations
There are actually plants that grow in full sun that we can’t grow here! What are they? Some palm trees, banana trees… think tropical! But we can grow crabapples and this year there are several on the list: ‘Strawberry Parfait’ with its pink blooms and red fruit would make a welcome spring statement anywhere. Or, GOLDEN RAINDROPS® Crabapple (Malus transitoria GOLDEN RAINDROPS®) with its tiny golden fruit will add unusual fall color while supporting the birds. There is also a fragrant crabapple, SUGAR TYME®, turning back the clock hands to the fragrant gardens of yesterday.

Cherry trees also flower in spring and prefer full sun. Yoshino Cherry (Prunus x yedoensis) was among the cherry trees planted in Washington D.C. many years ago. On the Great Plant Picks List is ‘Akebono’ offering pure pink flowers in early spring and sprightly yellow-orange fall color. Growing twenty-five to thirty feet tall and spreading twenty-five to thirty-five feet wide, this tree makes a beautiful lawn specimen.

Another great lawn specimen is the PACIFIC SUNSET ® Maple (A. truncatum x A. platanoides Warrenred’ P.P. No. 7433). This tree has incredible orange fall color with medium-sized leaves. Growing to thirty feet tall and with a twenty-five foot spread, its pyramidal-to-round structure is pleasing, and it still allows space for low-growing shrubs or perennials. The russet colors of the PACIFIC SUNSET® foliage and the reddish-orange fruit of Creeping Taiwan Bramble (Rubus pentalobus) come together to make a colorful combination while providing for the birds.

To create a completely different feeling while still using maples, Japanese maples (Acer palmatum) provide an Asian feel to any landscape. Their delicate but colorful simplicity has inspired hundreds of Japanese gardens, and here it inspires gardens for those who delight in texture, form and color while creating an unassuming ambience. There is a Japanese maple for any location, even a container. ‘Shaina’ is a layered, but densely-leaved maple which reaches only three to four feet in height, and that very slowly. For more spacious sunny locations, there is ‘Ukigumo’ (Acer palmatum ‘Ukigumo’). This tree displays green leaves which turn flaming red in fall. As its name implies, ‘Orangeola’ produces burgundy red new growth which turns coppery-red in fall, and, ‘Shishigashira’ begins the spring with bright green leaves which later turn bright reddish-orange. Looking beneath these beauties, we might find a David Viburnum (Viburnum davidii), a staple here which does well in sun or shade and looks best when massed. After it’s established, this plant is drought tolerant, its moisture retained in its thick, leathery leaves. Rhododendron ‘The Hon. Jean Marie de Montague’ thrives in heat and sun. It gets to be about five feet tall in ten years and will grow larger in time. With its red blooms held in trusses of up to fourteen blooms at a time, it’s an exuberant mid-season bloomer and would look well flanking any of these maple selections. Ilex crenata ‘Convexa’ with its small evergreen leaves and dark purple black berries is an excellent foil for the summer blooms of Penstemon ‘Blackbird’, and Georgia Blue Speedwell (Veronica peduncularis ‘Georgia Blue’) makes a fine groundcover growing to about four inches in height and blooming from summer to mid-autumn.

Conifers can be sun worshippers too, and Golden Japanese Cedar and Plume Japanese Cedar (Cryptomeria japonica ‘Sekkan-sugi’ and Cryptomeria Elegans Group) are rapidly growing conifers that do best in full sun down to partial shade. The Plume Japanese Cedar can achieve thirty feet in height and eight feet in width. In time they can be larger. ‘Sekkan-sugi’ is upright, growing to twenty-five feet tall and more, displaying dense golden foliage. Paired with park-sized blue-needled giant sequoia (Sequoiadendron gaganteum ‘Glaucum’) or, for the modest backyards most of us have, Oriental Spruce (Picea orientalis) and Himalayan White Birch (Betula utilis var jacquemontii) in front, a wooded backdrop can easily be created. The Himalayan White Birch planted in front would add striking vertical accents from its silvery bark peeling back to reveal burgundy undertones. Planted beneath might go Minuet Mountain Laurel (Kalmia latifolia ‘Minuet’). This shrub grows to be five to six feet tall and wide. Like rhododendrons, this shrub is Ericaceous, but its blooms are like patterned stars, made prominent by the dark back drop of its evergreen leaves. ‘Minuet’ is slow-growing, and would be an excellent companion to the deciduous Rhododendron ‘Snowbird’ which grows well in sunny to partially sunny conditions. ‘Snowbird’ produces sweetly-fragrant spring blooms, and it’s hardy and stoloniferous. Its medium green foliage and comfortable height of four feet make it easy to mix in any number of naturalizing conditions.

The Woodlands
Plants suitable for the woodlands, either to supplement existing sites or create new ones, are abundant on the list. For magnolia fans, the Oyama Magnolia (Magnolia sieboldii), is the perfect woodland tree. Flourishing in humic conditions and flowering heavily in spring and then lightly all summer long, its white, fragrant flowers are a delight. Sargent’s Weeping Hemlock (Tsuga canadensis ‘Pendula’), and the Weeping Katsura tree (Cercidiphyllum japonicum ‘Morioka Weeping’) do best in light shade. As weeping trees, the eye is naturally led to the earth beneath. Variation through foliage and bloom can be added by planting perennials such as Gold Heart Bleeding Heart (Dicentra spectabilis ‘Gold Heart’), Sum and Substance Hosta (Hosta ‘Sum and Substance’), Variegated Gladwyn Iris (Iris foetidissima ‘Variegata’) and Guinevere Primrose (Primula ‘Guinevere’). Wood Anemone (Anemone nemorosa) is a proven groundcover, as well as one that I have to throw in even though it’s not on the list: Hepatica (Hepatica nobilis). They’re drought tolerant, semi-evergreen in our climate and have beautiful white, blue, purple or pink flowers which bloom in early spring.

The Spring Pea Bush, (Lathyrus vernus), is a moisture-loving perennial that, while slow to establish, is tough as nails once it has. A member of the pea family, it offers about two months of purple-blue blooms. Evergreen here, this perennial enjoys more light in winter so consider planting under deciduous trees.

Have fun tiptoeing through the magnolias, and the viburnums, and the campanulas… I only wish I could have gotten to all of them! You will not be disappointed.

~ Nancy Tom is an environmental horticulturist who designs, installs and maintains landscapes for Down-to-Earth Gardens, Inc. This article appeared in Garden Showcase, April 2003. ~

Archived Articles
Great Plant Picks 2005
Northwest Horticultural Society's Annual Plant Sale 2004: September 10 and 11, Northwest Garden News
My, How You've Changed! 2004 Annual and Perennial Introductions, Garden Showcase
Using Burgundy and Plum in the Garden, Garden Showcase
Soil Interfacing: Avoiding Drainage Problems, Fine Gardening