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Over the Fence

Where gardeners come to find out what's happening out in the yard.

Tree Foliage Diseases and Galls

Posted by Richard Hentschel -

Now that nearly every shade tree and ornamental are in full leaf, gardeners have been spotting some "spots" out there. Those spots can range in color from light green on a very green leaf (oak leaf blister) to black dots coming together to give a much larger blotch of black (tar leaf spot on maples). In general, leaf spot diseases are rarely fatal to a tree so that is good news. What is...

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Mulch Madness

Posted by Richard Hentschel -

Calls to the Master Gardener Help Desks about using bark mulches in the home landscape and gardens has prompted a Q&A column this week. Organic mulches are used on new plants to help them establish and lessen transplant shock. Mulches conserve soil moisture; keep weeds and grass from encroaching and moderates soil temperatures, making it easier on the limited root system. On older establish...

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Down the Garden Path 7-10-17 pic

Poison Ivy

Posted by Richard Hentschel -

Poison ivy has been around forever and may have behaved itself by staying out of our yards and groundcover beds…until now. Every time there is a situation that affects our landscapes, likely a corresponding condition is favoring nature. For example, if you don't mow the lawn for a season, you get an interesting mix of weeds germinating and growing to outcompete the lawn grasses. The same can be...

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Already July

Posted by Richard Hentschel -

Vegetable crops are mostly doing what they should be doing right now, given our sporadic plantings working around the weather. U of I Extension Master Gardeners have mainly been getting tree, shrub, evergreen and flower questions, and are not hearing about problems in the vegetable garden. Leafy greens, including Swiss chard, have been doing very well. Harvesting and eating those greens...

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Bugs, Diseases and Weeds in the Landscape

Posted by Richard Hentschel -

So many problems this year have been weather related. One grass-like weed that has shown up in the lawn, flower and garden beds is yellow nutsedge. Grass-like because it is actually a sedge. It is yellow-green in color and, if left to mature, produces "nutlets" in the soil to grow from in the future. To clearly identify it, cut even a very young plant in two, and look at the cut ends. You will...

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Gardening Potpourri

Posted by Richard Hentschel -

Landscape care strategies have certainly changed since it has gotten dry and hot, and now we have gotten scattered rain events giving water to some and not others. We are seeing the end of the spring bulbs with foliage yellowing and drying down, which is accelerated by the hot dry conditions. The early spring bulbs "went away" some time back, now it is the daffodils. Other perennials, l...

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Dealing with Waterlogged Soils and Plants

Posted by Richard Hentschel -

Horticulture Educator Rhonda Ferree recently wrote an article on our over-the-top spring rains and the waterlogged soils that resulted. Her comments apply statewide and I wanted to share some of that article this week. "It's no secret that much of Illinois has received excessive spring rains, which has resulted in waterlogged soils and flooding. It is important to understand what is hap...

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