Yardandgarden.extension.iastate.edu

Health Benefits of Gardens Yard and Garden

WEBCindy Haynes, ISU Extension Horticulturist, recently spoke about the health benefits of gardening including the calming effect that lifts your mood, reduces your blood pressure …

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URL: https://yardandgarden.extension.iastate.edu/article/2010/10-27/health.html

Rhizosphaera Needle Cast Yard and Garden

WEBRhizosphaera needle cast is the most common disease on spruce trees that is received in the Plant and Insect Diagnostic Clinic. Rhizosphaera needle cast is caused by fungal …

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How to Diagnose Problems with Trees in the Landscape

WEBMany factors can cause trees to become unhealthy and lose their aesthetic value or die. Some of those factors include: environmental stresses. site problems. animal injury. …

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How To Change Your Soil's pH Yard and Garden

WEBElemental Sulfur and Aluminum Sulfate. Elemental sulfur and aluminum sulfate are the most common amendments used to decrease the soil pH. Elemental sulfur is the safest option …

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Testing and Improving Soil Drainage Yard and Garden

WEBA percolation test of the soil (perk test) is the best way to determine how well-drained the soil is, even on the side of a slope. To perform a perk test, use a shovel or post-hole …

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Biotic vs. Abiotic

WEBDrought stress or chemical injury will likely cause damage on several types of plants. In contrast, biotic disease problems are more limited to a certain species. The fungi that …

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Rose Black Spot Yard and Garden

WEBBlack spot of rose, also known as leaf blotch, and leaf spot, is a disease caused by a fungus called Diplocarpon rosae. The optimal conditions for disease development are 75-85° F …

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Guide to Selection and Care of Poinsettias Yard and Garden

WEBThe poinsettia should be properly hardened in 7 to 10 days. Once hardened, dig a hole in an area that receives 6 to 8 hours of sunlight and set the pot into the ground. Plants …

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Cytospora Canker Yard and Garden

WEBThe most common canker disease observed in the Iowa State University Plant and Insect Diagnostic Clinic is Cytospora canker on blue spruce. Cytospora canker is observed …

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Propagating Houseplants Yard and Garden

WEBPropagation is the creation or growing of new plants. When houseplants get large or more plants are desired, many can be easily propagated. Many species are propagated at …

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Causes of Branch Dieback on Trees Yard and Garden

WEBRoot Damage. Damage to the root zone due to construction, compaction, or grade changes can inhibit the uptake of water and flow of nutrients in the tree, causing branch dieback. …

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Sooty Mold Yard and Garden

WEBThese fungi don't infect plants, but grow on the sugary honeydew excreted by aphids, scales, mealybugs, and other insects. The growth of these fungi is primarily an aesthetic …

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Growing Orchids Indoors Yard and Garden

WEBAvoid hot exposures – usually east and south-facing windows are best. If needed, many orchids grow well under artificial light. Select high-output, full-spectrum fluorescent or …

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Soil Testing Resources for Home Gardeners Yard and Garden

WEBWaypoint Analytical. Frontier Labs. VAS Lawn & Garden Soil Testing. A&L Great Lakes Laboratories. Midwest Laboratories. Dairyland Laboratories. SoilKit. Any one of the soil …

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Pruning Large, Overgrown Shrubs Yard and Garden

WEBProper pruning can renew or rejuvenate overgrown, deciduous shrubs. One method is to prune them back over three years. Begin by removing one-third of the large, old stems …

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Can Sick Plants Make People Sick

WEBYou are not likely to catch a disease from working with diseased plants in your garden, but it is a potential risk (depending on the infection), and consideration should be taken. …

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Fungicides and How to Use Them Effectively Yard and Garden

WEBContact fungicides (AKA protectants) are not absorbed by the plant and stick to plant surfaces. They provide a protective barrier that prevents the fungus from entering and …

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Flowers and Their Meanings: The Language of Flowers

WEBCrocus—Cheerfulness. Cyclamen—Resignation and good-bye. Daffodil—Regard, unequalled love, you’re the only one, the sun is always shining when I’m with you (see …

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How To Recognize Common Diseases of Oaks in the Midwest: …

WEBRed oak displaying brown, wilted leaves on the tips of branches. Figure 12. Dark brown, elongated canker (see area between arrows) on an affected branch tip. Figure 13. Black, …

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