This month I wanted to take a look at an IPM tool that is too often over looked by growers, a tool that provides invaluable information to growers about how their crops and pests are progressing throughout the growing season. This month I would like to discuss the concept of phenology. Have you ever been with…

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Harrell’s Technical Manager Marshall Horsman explains the proper way to fertilize palm trees in a landscape environment. Marshall Horsman is a Technical Manager for Harrell’s, specializing in tropical horticulture. He has been studying palms and horticulture since the age of 13, when he began traveling to remote areas of Latin America and the Caribbean with his…

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In this video, Harrell’s Technical Manager Marshall Horsman explains various nutritional deficiencies affecting palms, and how to identify and treat these problems. Nutrients covered include nitrogen, potassium, magnesium, manganese, iron and boron. Marshall Horsman is a Technical Manager for Harrell’s, specializing in tropical horticulture. He has been studying palms and horticulture since the age…

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And then there was boron. Boron may sit at the bottom of the food chain, so to speak as it is a minor element needed in very small amounts, with only Molybdenum being lower. It is none the less very important! Boron helps aid the transport of sugars made through photosynthesis. However, its main role is…

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Syngenta has released a technical bulletin for a new fungicide called Micora in the ornamental markets. The active ingredient, Mandipropamid, is in MOA class 40, the Carboxylic Acid Amides. This chemistry will have protectant and contact control and translaminar activity into the leaf cuticle. Micora provides long residual control of labeled diseases Phytophthora and Downy…

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Impatiens Downy Mildew – Dr. Margery Daughtery from The Cornell Extension Agency on Long Island spoke to us about Impatiens Downy Mildew. Prior to 2011 this disease had been isolated in a few pockets of the U.S. including the Midwest and New England. The unusually wet and stormy summer and fall we had helped to…

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On December 15, 2011 a Southeast Georgia citrus grower decided to put Harrell’s EarthMAX™ to the test. The grower set up a ‘head-to-head’ competition between two Ruby Red Grapefruit trees of the same age.  He used a 1/2% solution rate every two weeks as an application rate for the treated tree and for the next three…

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Additonal Resources: Boxwood Blight Update: Where we are and where we hope to be. by the ANLA See new updates from the Connecticut Agricultural Experiment Station Boxwood Blight- new Diseas in Connecticut and the U.S. by the Connecticut Agricultural Experiment Station Boxwood Blight has been documented in Europe for several years now  and has just started to take hold…

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Across much of the northern U.S. the Brown Marmorated Stink Bug is still getting lots of attention. With the warm winter that we have had I would bet that the stink bug population will be up this year. I got an email from Mike Hall this winter with a picture of his first stink bug…

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This month let’s focus on an insect that is sure to show up in nurseries and greenhouses in the next couple of months, the whitefly! Whiteflies can take on many different looks and appearances as they grow from egg to adult. Eggs are laid by females on the underside of the leaves. Within two weeks, the…

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Cylindrocladium is traditionally classified as a leafspot disease, but as new strains start to emerge, growers are starting to realize that this disease can take on many forms. In herbaceous plants and Ilex, Cylindrocladium appears as a colored leafspot. In Azaleas it can cause a dieback of roots and vascular system, in Rhododendron cankers form…

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Zinc. Yes, zinc is this month’s nutrient of the month. I contemplated skipping it and going straight to boron. I mean, when was the last time a client accused our fertilizer of not having enough zinc? And what does a zinc deficiency look like? Well, after doing a little research on zinc, one of our…

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With the New Year comes a new growing season, and before long, rose producers all over the country will start to pot up new crops. Most growers shoot for target ship dates starting just before Mother’s Day. There are a couple different ways that growers will produce these rose crops. The easiest way to do this…

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First let’s take a look at Easter Lilies… ya know, those lilies with the massive white flowers that are sold in droves for the Christian holiday of Easter. It is estimated that between 8-10 million are produced for this holiday alone. Bulbs must go through a vernalization or cooling period of about 6 weeks, which…

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Earlier this year Harrell’s ran the first annual Harrell’s Family Photo Contest with divisions and categories for Horticulture, Turf and LCO. We received many outstanding entries. Entrants were competing for the winning division purse of $100 and $25 for each category. We’re happy to announce the following winners: Horticulture Division Winner ($100) and Horticulture Production/Container Winner ($25) Horticulture Beauty/Nature…

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