New native shrubs show promise for landscape, nursery industries

Oct 21, 2013
Viburnum acerifolium was the easiest shrub to propagate among four native shrubs evaluated in a study, proving it has potential to be a mainstream nursery crop. Credit: Photo courtesy of Jessica Lubell

As consumer interest in native plants increases, nursery growers are challenged to expand their product range by adding new native species to their collections. Surveys have indicated that landscape architects and master gardeners would like to use more native plants, but that a broad palette of native plants is not currently available from most growers. Growers looking to capitalize on the native plant market are looking to scientists to recommend new species suitable for the commercial nursery industry. In the August 2013 issue of HortScience, researchers Julia Cartabiano and Jessica Lubell from the Department of Plant Science and Landscape Architecture at the University of Connecticut report on their study of four native shrubs that are relatively unknown in the horticultural trade: Ceanothus americanus, Corylus cornuta, Lonicera canadensis, and Viburnum acerifolium. They said that these shrubs have the potential to become revenue generators for the nursery industry if successful propagation protocols are developed.

Cartabiano and Lubell evaluated the impact of cutting timing on propagation success of the four . They found that timing had no significant effect on rooting percentage, root count, or root length of Corylus cornuta or Viburnum acerifolium. "Some growers have reported difficulty propagating Viburnim acerifolium," noted corresponding author Jessica Lubell. "However, we found it to be the easiest shrub to propagate of the four natives evaluated, and therefore it has the most obvious potential to be a mainstream nursery crop. Nearly 100% rooting can be achieved with V. acerifolium cuttings containing two nodes taken mid-June through mid-August."

Another standout in the study was Corylus cornuta, which the researchers said can be propagated at 85% rooting or greater when cuttings are taken mid-June to mid-August and treated with indole-3-butyric acid at 3000 ppm. "Our results indicated that Corylus cornuta, in addition to Viburnum acerifolium, has the potential to be a new nursery crop," Lubell said.

The study recommends that rooted cuttings of both Corylus cornuta and Viburnum acerifolium should be left in rooting containers for a period of cold dormancy before transplanting in order to optimize cutting survival. "Growers who overwinter their C. cornuta and V. acerifolium in the container in which they were rooted can expect close to 100% survival," noted Lubell. They advised that fall transplanting will likely result in 50% attrition, thus reducing the potential for the species to be viable in commercial nursery environments.

Cartabiano and Lubell said that, although Corylus cornuta and Viburnum acerifolium showed the most promise as commercially viable nursery crops, further propagation research could validate all four of the native species in the study as recommended crops for general wholesale nurseries.

Explore further: Zimbabwe to export elephants in population curb

More information: hortsci.ashspublications.org/c… t/48/8/1018.abstract

add to favorites email to friend print save as pdf

Related Stories

Developing alternatives to invasive shrubs

Sep 08, 2010

(PhysOrg.com) -- Connecticut's largest group of ornamental plant growers recently took a big step towards curtailing the spread of invasive plants in the state. In June, the Connecticut Nursery and Landscape ...

Who influences purchases of native plants?

Mar 25, 2009

Native plants are a growing niche market in the southeastern United States. Researchers have documented recent trends toward increased interest in native plants by landscape architects, wholesale and retail ...

Grape vines in hot water

Oct 02, 2013

A tool to help growers and nurseries plant healthier grape vines has been developed by a Charles Sturt University (CSU) researcher.

Recommended for you

Wildlife groups seek help for California owl

Dec 24, 2014

Loggers cutting down forests burned in wildfires could bring about the extinction of California spotted owls, wildlife advocates said Tuesday as they sought protection for the birds under the federal Endangered ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.