Oak leaf blister has started to appear on oak trees on the Illinois. This disease is caused by the fungal pathogen, Taphrina caerulescens. Members or the red oak group are more commonly affected by the disease. Symptoms are distinctive, and appear as scattered blister-like, puckered, or...
Fire blight symptoms were observed on several Callery pears this past week,” says Travis Cleveland, University of Illinois extension specialist. “The symptoms were more severe than those observed during the 2013 growing season.” Fire blight is a bacterial disease that affects rosaceous...
The dreaded squash bug is inevitable if you are growing squash, melons and pumpkins says Horticulture Educator, Kelly Allsup. It is responsible for major crop failure and causes hysterical gardeners running to buy chemicals in which to kill them. Besides this issue these crops can be really easy...
As a horticulturist, I am often asked to name my favorite plant. After my mind spins from traveling through my past, I am left momentarily speechless. Is my favorite plant the bountiful bunch of cymbidium orchids from Holland or the vivid blue poppies from the Chelsea flower show in London or...
Most Knockout roses in our area have bounced back from the winter kill by resprouting from the base causing the plants to be smaller and more compact this year. However few, some in our area had to be replanted the one’s that didn’t had a little help from Mother Nature with their garden pruning...
Bagworms will have hatched in southern Illinois. They should hatch by mid-June in central Illinois. When newly hatched bagworms emerge from their mother's bag, they climb to the top of shrubs, trees, and any other erect object. They spin out two to three feet of silk which catches in the wind...
Take container gardening to the next level by utilizing bulbs for stunning summer displays. Summer flowering bulbs can bear some of the most beautiful blooms or striking foliage, adding surprise pops of interest to your porch or outdoor garden. This gardening adventure can be very cost-...
There are three sawfly species that commonly attack azaleas, two in the spring and one in the summer. We are apparently currently seeing Amauronematus azaleae. There is one generation per year with the adults emerging to lay eggs on expanding leaves in the spring. The larvae are feeding...
Hydrangea leaftier, Olethreutes ferriferana, has been noticeable in central Illinois and is present in other areas of the state. Damage appears as two to four cupped leaves tied together with silk at the end of a branch. An attacked plant will typically have ten to twenty of these...
Last spring, Joel Karsten wrote a book called "Straw Bale Gardens" that has taken the gardening world by storm and given growers a new media to grow vegetables, herbs and annuals. The science behind the decomposition of the straw bale is what makes it the ideal growing media for vegetables....
