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Poinsettia: Lower Leaf Blotches
We are midway into the poinsettia season. This is the time of year that lower leaf blotches can appear on poinsettias...
Nutrient replenishment in hydroponics
Controlling the electrical conductivity (EC) ofrecirculating nutrient solution is a simple and practical way to managenutrient supply in hydroponics, and growers often aim to maintain a target EClevel for a healthy crop...
Broad Mite on Anemone
While we see broad mite most often in annual flower and vegetable crops grown in greenhouses, realize that this pest has a wide host range and has also been seen affecting herbaceous perennials as well as some woody plants...
Tipburn of hydroponic lettuce
Inner leaf tipburn is a common disorder inhydroponic lettuce during the summertime. Symptoms include brown (necrotic)spots on the tips and edges of young leaves developing in the center of a headof lettuce...
Coloring Up Ornamental Pepper Fruit With Ethephon
Journal Article AbstractEnhancement of Ornamental Pepper Ripening withEthephon Sprays or Drenches@font-face {font-family:Century; panose-1:2 4 6 4 5 5 5 2 3 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:647 0 0 0 159 0;}@font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 0 0 0 1 0;}@font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:-520092929 1073786111 9 0 415 0;}p...
High pH-induced Iron Deficiency of Fall Garden Mums
Fall garden mums should be grown with a substrate pH range of 5.8 to 6.2. Substrate pH influences nutrient availability and uptake, therefore use recommended 1:2 Extraction, SME, or PourThru methods to determine and monitor substrate pH and soluble salt [referred to as electrical conductivity (EC)] values...
Proper Placement of Predatory Mites
The placement of sachets containing predatory mites isimportant to ensure their effectiveness. The photo on top shows what not to do(i...
Common pH Problems in Retail Greenhouses
Many retail greenhouses and garden centers are gearing up for Mother’s Day weekend – the traditional start to the spring sales season here in the upper Midwest...Using pathogen testing kits for plant disease diagnosis
When plants start dying or showing symptoms of a disease, a quick diagnosis is important to reduce disease spread through a crop...
Heat Induced Flower Deformation in New Guinea Impatiens
It’s important to review some key production guidelines to ensure you produce the highest quality NGI crop this season...
The 3 types of melon consumers
The average American eats almost 9 pounds of cantaloupe and 2 pounds of honeydew each year (Agricultural Marketing Resource Center, 2018)...Check Your Containers
Containers or flower pots are available in many shapes and sizes (dimensions and volume) and made of various materials...
Don't Leave CFAP2 Payments on the Table
The United States Department of Agriculture (USDA) recently announced new programs and efforts to provide financial assistance to farmers (including nursery, greenhouse, cacti and Christmas tree producers) negatively impacted by the Coronavirus pandemic...
Focus on Clerodendrum
The wide array of plant species grown in floriculture production is one of the highlights of the industry...
Is city water safe for hydroponically-grown leafy crops?
Growers producing leafy greens in hydroponic systems should be wary about using city water for their operation...
Recorded Webinars on Seed Propagation, Retail, and Coronavirus Relief Programs
Michigan State University Extension hosted three webinars recently that will be of interest to wholesale and/or retail greenhouses:"Cashing in on Gardening Motivations" - Dr...
Ontario's Resources on Using Natural Enemies
Sarah Jandricic, OMAFRA, and Michael Short, Eco Habitat, hosted "IPM 101: Biocontrol Learning Series - The Basics of IPM in Floriculture" on March 2nd...
Nutrition Challenges with Stalled Growth
Plants thrive with sunlight and warmer temperatures. Both of these have been in short supply the last few weeks in North America with the polar vortex conditions dominating the north, and rainy, cloudy weather in the south...
Vegetable Transplants: Protecting from Pests
Gardening is hot! Vegetable transplants are expected to betop sellers again this year. A quick scan of on-line seed catalogs shows many tomatovarieties still available but also many sold out, which may be an earlyindicator...
The Top 5 Melon Attributes
Additional authors include: Enrique Velasco, Bridget Behe, and Petrus LangenhovenAmericans are demanding more fresh fruits than ever, and among all fruits, melons are one of the most consumed fresh fruits...
The New England Floriculture Guide is Free!
The New England Greenhouse Floriculture Guide: A Management Guide for Insects, Diseases, Weeds, and Growth Regulators is now free at http://negfg...
Preventing Flowering and Stalled Vegetative Growth
Now is the time when cuttings begin to arrive in greenhouses across North America and Europe. There are a few species, such as dahlias, tuberous begonias, iresine, and alternanthera, that require long day conditions in order to prevent premature flowering and stalled plant growth...
e-GRO Welcomes Three New Team Members
The e-GRO team continues to grow! We would like to introduce our newest e-GRO members, Drs. Chieri Kubota, Alicia Rihn, and Debalina Saha...
Prevent Plant Problems Before They Get Started
As growers across the country are either knee-deep in spring crops or preparing to plant, growers should remember follow good sanitation practices to reduce disease, insect, and weed problems...