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May 12, 2015
Temperature is the primary factor that controls the rate of plant development.  Plants grow progressively faster as the average daily temperature increases. This is only true to a point though — obviously you can’t put plants in an oven to make...
May 12, 2015
Rex begonias are native to the tropical and subtropical regions of South and Central America, Africa and Asia. They have advanced as understory plants requiring a good amount of shade to flourish. The rex begonia varieties available today are...
May 12, 2015
  Heuchera is an incredibly popular genus of perennials, which has proven to be one of the most sought after plants in recent history. With what seemed to have been countless introductions over the past decade or so, it’s hard to comprehend how...
May 12, 2015
Demand for eco-friendly brands continues to increase in horticulture and beyond, and growers have responded by placing increased focus on local and organic programs. But what makes a retail plant “green” is more than the color of its leaves — the...
May 12, 2015
Gardens in 2015 are seeing bold colors and drought-resistant, easy-to-care-for plants that are suitable for containers, borders and landscapes. Each year, GPN compiles a list of award-winning varieties for the year to share with readers. Judges have...
May 12, 2015
This year marks the fourth edition of GPN’s 40 Under 40 program. Like the previous three classes, the members of the Class of 2015 are truly special. The 40 individuals in this year’s class represent all facets of horticulture, but they all have one...
May 12, 2015
Plant protection of greenhouse-grown horticultural crops requires a basic knowledge of the biology, behavior, and life cycle of the most common insect and mite pests such as aphids, whiteflies, thrips, and spider mites. It also requires a...
April 13, 2015
Figure 1. Sprench applications of PGRs have become more popular on aggressive bedding plant crops such as petunia. I’ve noticed an increasing trend in the use of sprench applications of plant growth retardants (PGRs), especially by large-scale...
April 13, 2015
 Abalzin' salvia is currently offered in two colors: Tabasco and Purple. Salvia is one of the most traditional consumer gardening flowers, combining easy care and a long season of color with a host of other great traits. At one point salvia was...
April 13, 2015
‘Hipsters Zooey’ is heat tolerant and performs well across much of the country. Best leaf coloration occurs in locations with morning sun and afternoon shade. For more than twelve years I have featured a wide range of perennials in this column....
April 13, 2015
For years, the horticulture industry has been at the forefront of the sustainability discussion. Greenhouses and nurseries were using recycled materials and initiating waste-reduction plans long before other industries recognized the need for...
April 13, 2015
Vessel Bio Products is situated within the Ohio Agricultural Research and Development Center’s BioHio Research Park. The horticultural division of Vessel specializes in adapting the sustainable soil health methodologies the company developed in...
April 13, 2015
Western flower thrips are some of the most common and damaging insects found on plants grown in greenhouses. These insects have many characteristics that help them become pests; they have a short life cycle going from egg to adult in about two...
April 13, 2015
If you have only been growing one type of plant, for instance tropical foliage plants, you might think all plants get the same diseases. In my 35 years as a plant pathologist, I have worked on nearly all types of ornamentals from cut flowers to...
April 13, 2015
Of course you do! But do you know what 2015 is the Year of? Do coleus, gaillardia and sweet pepper sound familiar? They should, because those are the crops that the National Garden Bureau (NGB) has designated for its “Year of” program for 2015. Each...
'Festival Pink Lady'
March 11, 2015
While long known as a superior cut flower, gypsophila has only recently gained attention for its potential as an excellent pot plant, container plant and even for its ability to add interest in flower beds. The Festival series provides all of those...
‘Celestial Twilight’
March 11, 2015
Viola brings cheerfulness and nostalgia to any landscape. The Celestial series of viola from Darwin Perennials offers many desirable attributes and was selected for its winter hardiness, heat tolerance, early flowering and compact habit. There are...
Kniphofia hybrids
February 13, 2015
The Rockette series of kniphofia hybrids from EuroAmerican are new must-have genetics with distinct improvements on the classic perennial favorite: Red Hot Poker! Their uniquely textured grass-like foliage, continuous blooming habit and vibrant...
Ball Horticultural Co.
February 13, 2015
Candytuft has been a perennial favorite for its reliably early spring color. In spite of its early flowering and popularity with consumers, iberis has been known among many growers as a hit or miss crop. Many growers have struggled to produce...
January 13, 2015
Panicum virgatum ‘Ruby Ribbons’ stuns with soft blue-green foliage that emerges in the spring on upright arching, clumping plants. Bred by Dr. Mark Brand at the University of Connecticut, ‘Ruby Ribbons’ features foliage that takes on a wine-red...
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