Released April 28, 2008
BATON ROUGE, La. -- Through the selection of cultivars with foliage that stays a brilliant yellow-green all summer, horticulturists have developed plants that extend a spring feeling throughout the growing season.
As time goes by, more and more plants have become available with chartreuse, yellow-green or golden foliage. For some gardeners it takes a little getting used to. The yellow-green plants that some gardeners find beautiful may simply look to others as anemic and starved for nutrients.
Still, the foliage of these uniquely colored plants can provide a bright note in the landscape, and they furnish a wonderful contrast to the medium- to dark-green foliage of most plants. It seems you see more of these plants available at area nurseries and from mail-order catalogs these days, indicating a growing popularity for plants with chartreuse foliage.
Using them in the landscape does require some thought and even some restraint. A whole bed of the more brilliant of these plants could be overwhelming. But used as accents, for contrast, to brighten shadier areas or to complement other plants in a carefully considered combination, these uniquely colored plants can add real zip to your landscape.
It is amazing how many categories of plants have cultivars with golden or chartreuse foliage. If you look in specialty catalogs, you’ll find trees, shrubs, vines, ground covers, perennials and annuals. I have to admit to being a little leery of using a large tree that stays gold-green because it could be a little overwhelming. But I have seen such shrubs, vines, ground covers, perennials and annuals all used in landscapes with great results.
One of the plants leading the way is the Margarita ornamental sweet potato, a perennial ground cover or bedding plant that grows through summer and is dormant in the winter. It is widely available at nurseries and is becoming fairly common in landscapes. In full sun, the foliage is a brilliant gold-green, while with a little shade the color softens to chartreuse. This is common with the golden-foliage plants. The color often softens and becomes somewhat greener in shady areas.
Back in the early ’80s, the golden euonymus (Euonymus japonicus Aureo Marginata) was all the rage. Landscape architects and horticulturists generally despised the plant as being loud, garish and plastic-looking in the landscape. And I have to admit it was somewhat over planted and often not used to its best advantage. Golden euonymus, however, can make a great accent plant when it is combined appropriately with other plants and pruned properly. And the color is softened when it is planted in a shadier location.
Consider the use of gold, gold-green and chartreuse foliage plants in your landscape. In combinations with other colorful foliage plants (such as the purple foliage cultivars of Chinese witch hazel – Loropetalum chinensis), they can do a lot to brighten a landscape without the high maintenance involved with many flowering annuals and perennials. The following list includes a small sampling of the plants you might consider using in Louisiana.
Trees
Gold Catalpa (Catalpa bignonioides Aurea), Sunburst Locust (Gleditsia triacanthos Sunburst), Deodar cedar (Cedrus deodara Aurea) and Golden Japanese cedar (Cryptomeria japonica Sekkan Sugi)
Shrubs
Golden barberry (Berberis thunbergii Aurea), Golden mock orange (Philadelphus coronarius Aureus), Golden euonymus (Euonymus japonicus Aureo marginata) and several spireas, such as Spirea japonica Golden Princess.
Vines
Buttercup English ivy (Hedera helix Buttercup) and Golden hops (Humulus lupulus Aureus)
Perennials
Margarita ornamental sweet potato (Ipomoea batatas Margarita); Kingswood Gold jewels of Opar (Talinum paniculatum Kingswood Gold); numerous hostas, such as Wogon, Sum and Substance, Guacamole and Golden Prayers; Golden sedum (Sedum acre Aureum); and Ogon acorus (Acorus gramineus Ogon).
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Contacts: Dan Gill, (225) 578-2222, dgill@agcenter.lsu.edu
Rick Bogren, (225) 578-2263, rbogren@agcenter.lsu.edu
