March 13, 2012
Euphorbia Polychroma vs. Euphorbia ‘Ascot Rainbow’
When old fashioned cushion spurge, Euphorbia polychroma, was used in the past, it was mainly grown for its brilliant sulfur yellow bracts in spring. Beyond that, it didn’t hold a lot of interest in the garden. Over the past five years, many exciting new euphorbias like ‘Ascot Rainbow’ have come onto the market, and they offer season-long interest in the garden. Euphorbia isn’t just for spring anymore. With very little effort from the gardener, ‘Ascot Rainbow’ offers three seasons of interest in the landscape. Phenomenal foliage and an ideal habit set this variety apart. Every part of this plant is variegated, even the bracts that surround the large clusters of flowers in late spring. It keeps its tight, bushy, upright habit from spring to winter without any pinching. In areas with mild winters, it can remain standing through the winter. It makes an excellent container specimen as well. The key […]
March 13, 2012
Better Bloomers: Hemerocallis ‘Happy Returns’ vs. ‘Going Bananas’
In twenty years, breeders can make big advancements, and ‘Going Bananas’ is living proof. Twenty years after the introduction of ‘Happy Returns,’ one of the most popular daylilies of all time, there’s a new variety on the block named ‘Going Bananas.’ And it’s threatening to take over the neighborhood. Although the two daylilies share a similar flower color and compact habit, the flowering performance of ‘Going Bananas’ is greatly improved. Even on the sunniest days, the lemon yellow flowers of ‘Happy Returns’ do not open wide and flat like those of ‘Going Bananas’. The flowers of ‘Going Bananas’ are 1 inch larger than ‘Happy Returns’ and appear even larger because they open all the way. These flowers also open consistently, even on cloudy or rainy days. ‘Happy Returns’ is one of the earliest daylilies to bloom and starts 1 to 2 weeks earlier than ‘Going Bananas’. Unlike ‘Happy Returns,’ which […]
March 12, 2012
Pennisetum ‘Hameln’ versus ‘Desert Plains’
For years, Pennisetum ‘Hameln’ has been the go-to grass for landscapers across USDA Zones 5 to 9. When it was introduced many years ago, it represented a genetic advancement over the straight species. But now there’s something even better. Enter Pennisetum ‘Desert Plains.’ This plant, hybridized by Gary Trucks in Zone 5 Michigan, is an improvement over ‘Hameln’ in habit, fall foliage color, and flowering performance. Though they have similar green foliage, ‘Desert Plains’ forms a more refined looking, upright vase-shaped clump in the landscape. Whereas ‘Hameln’ has little appreciable fall color, ‘Desert Plains’ takes on shades of deep red, orange and gold. It blends well with other fall blooming perennials such as helenium and hardy garden mums. One of the most obvious improvements between these two is the flowering performance. Although ‘Desert Plains’ blooms slightly later than ‘Hameln,’ ‘Desert Plains’ produces showy, 5-inch long, smoky-purple bottlebrush plumes that age […]
March 12, 2012
Rudbeckia ‘Goldsturm’ Versus ‘Little Goldstar’
Rudbeckia ‘Goldsturm’ has been a top-selling perennial for ages and has won multiple awards since its introduction, including the Perennial Plant of the Year in 1999. So why try something new? While ‘Goldsturm’ is a nice choice, it does have flaws. In Michigan, one of the biggest problems is its susceptibility to Rudbeckia Leaf Spot. Often by the time the plant blooms, the foliage is covered in unsightly black spots. Also, the flowers are produced on tall stems well above the foliage, giving the plant a prairie-like look. In comparison, the new Rudbeckia ‘Little Goldstar,’ introduced in 2011 by Jelitto, offers a more compact and proportional habit, improved flowering performance and some measure of disease resistance. Depending on cultural conditions, ‘Goldsturm’ grows 2 to 3 feet tall with long, strong stems topped with a dome of large, golden yellow flowers from midsummer into early fall. The new ‘Little Goldstar’ forms […]
February 27, 2012
Battle of the Hibiscus: ‘Summer Storm’ vs. ‘˜Kopper King’
One of the most important achievements in hibiscus hybridizing over the past five years has been the development of indeterminate blooming cultivars such as Proven Winners’ ‘SUMMERIFIC Summer Storm,’ which produces flowers at the top three to five nodes up the stems. Because hibiscus flowers last just one day, many buds are needed to prolong the bloom time. Determinate bloomers, such as ‘Kopper King’ develop flower buds just at the tips of the stems. Thus, ‘Summer Storm’ and other indeterminate bloomers flower for approximately three months versus just one month of determinate types (in USDA Zone 5). In addition to its longer bloom time, ‘Summer Storm’ also features improved deep wine purple foliage and colorful pink flowers with a magenta eye.
June 22, 2017
Japanese Breeder Ushio Sakazaki Wins Medal of Excellenc…
From Supertunias to Superbells, this innovative Japanese breeder has used wild genetics to create game-changing plants that help consumers reconnect with the beauty of nature.
June 21, 2017
New Tool from Koppert Provides More Effective Thrips Ma…
A newly patented sachet for the predatory mite Amblyseius swirskii is resistant to both low and high levels of humidity, helping growers combat thrips infestations.
June 20, 2017
Dümmen Orange Enters Calla Market With Acquisition of G…
Golden State will continue to supply the market through September 2018, at which time Dümmen Orange will assume supply and delivery of much of Golden State’s product line.
June 20, 2017
Sign Up For The Luxflora Flower Run At Cultivate’17
The5k walk/run race, sponsored by Luxflora, is an opportunity for industry members to network, build relationships, have some healthy fun, and start off Cultivate’17 with a flourish.
June 19, 2017
IGC Show Features Talks on How to Cash in on the Buy Lo…
This year’s event, which takes place Aug. 15-17 in Chicago, also includes a free workshop on what you might do when starting your business over from scratch.
June 18, 2017
Protect Your Employees from Heat-Related Illnesses with…
The National Institute for Occupational Safety and Health and the Occupational Safety and Health Administration have released an updated app for smart phones that can help workers stay safe when working outdoors in hot weather.
June 17, 2017
Visser, Ball Partner on New Sticking Technology for Cut…
The new AutoStix system is designed to provide better consistency and uniformity with shipped cuttings, easier and more reliable counting, automatic transplanting, and optional buffering in the peak season.
June 16, 2017
Five Guidelines to Investing in Software for Your Green…
Any software improvement you make should make sense for your team and be worth the investment.
June 15, 2017
Greenhouse Grower’s 2017 Evening Of Excellence Will Rec…
Registration is now open for the 2017 Greenhouse Grower Evening Of Excellence, which takes place Monday, July 17, during Cultivate’17.
June 14, 2017
Plantpeddler Hosting Variety Day on Aug. 4 in Cresco, I…
The free event will allow attendees to tour Plantpeddler’s trial gardens, which include more than 1,200 varieties of vegetative annuals displayed in large containers, baskets, window boxes, and beds.
June 13, 2017
Are Your Geraniums Showing Signs of Iron or Manganese T…
Zonal geraniums with low pH can exhibit iron and manganese toxicity symptoms, including marginal chlorosis, leaf speckling, and upward-cupping of the leaves, according to Michigan State University experts.
June 13, 2017
New Research Explores Potential of Using Steam or Hot W…
USDA-Agricultural Research Service horticulturist Dr. James Altland is exploring an alternative method for controlling weeds in greenhouse propagation systems by using steam or hot water to kill weed seeds.
June 12, 2017
How to Improve Customer Success by Adding Residual Fert…
Even if it costs a few cents more per pot or extra labor, your customers will thank you with repeat sales.
June 9, 2017
New Head Grower at Emerald Coast Growers is Excited abo…
Jonathan Babikow, Emerald Coast Growers’ new general manager/head grower for its Lancaster, PA, location, talks about his favorite perennials, the advantages of growing in Pennsylvania, and his future hopes for his career.
June 8, 2017
AmericanHort Update on Genetically Engineered Petunias
AmericanHort is actively assisting affected plant breeders, distributors, growers, and retailers as the genetically modified petunia regulatory response continues. Since the last update, there have been several changes to the list of petunias confirmed or suspected of being genetically engineered and therefore unauthorized to be imported or sold. Also, the list of recognized laboratories for petunia variety confirmation testing has expanded. Most importantly, petunia varieties on the USDA-APHIS Biotechnology Regulatory Services (BRS) list require an APHIS Form 2000 for importation. APHIS also began requiring that any Petunia spp. Shipments, not including regulated GE varieties, must be accompanied by a list of variety names. This resulted in some inspection delays at the USDA-APHIS plant inspection station in Atlanta over the past two weeks. In response, AmericanHort has negotiated a more flexible approach with APHIS, and new guidance has just been posted for importing Petunia plants, cuttings, or seed. The new guidance allows […]
June 8, 2017
Bailey Nurseries Expo to Take Place in Late July in Min…
This year’s expo will focus on bridging the gap with Millennials and non-gardeners through creative marketing, engaging in-store displays, and heightened customer service.
June 6, 2017
How Was Your Spring? Let Us Know by Taking Greenhouse G…
Please take a few minutes to answer Greenhouse Grower’s 2017 Spring Recap Survey. The deadline for completing the survey is June 20.