I have over 30 years experience in greenhouse production, and have used this wonderful manual for over twenty years. It has been a good friend in solving and managing the issues that I, and other greenhouse growers have faced.
Leaf spotting fungi comprise a wide range of plant disease pathogens that do injury to many host plants.
The Weed Science Society of America (WSSA) announced that new and updated educational materials for both weed scientists and the general public are now available for free download from the Society’s website.
The International Society of Arboriculture (ISA) announces the relaunch of the newly-updated Board Certified Master Arborist® (BCMA™) exam effective February 1, 2016.
It is that time of year where the cold temperatures and the drab landscape start to wear gardeners down. Lengthening days give us some hope that spring is right around the corner and outside activity can resume.
Learn and earn pesticide re-certification credits from the comfort of your home or office. Each of the two-hour long webinars will feature two speakers from the Penn State Extension Green Industry Team.
Annual sowthistle (Sonchus olearaceus) is one of the annual thistles.
Beneficial insects are those that consume or parasitize insect pests. They include wasps, flies, beetles, true bugs, thrips (who knew!), spiders and mites. The good news is that that they are already active in the landscapes you manage, helping to keep pest species in check. But there is more that designers and landscape managers can do to make landscapes more welcoming for these hard working pest managers.
The question of whether it is environmentally correct to buy a real Christmas tree has been asked repeatedly in recent years, and an expert in Penn State's College of Agricultural Sciences wants to lay it to rest permanently.
Employers must often keep up with a variety of required government posters at their orchards, farms, or other places of business which can be daunting at times.
Getting to the bottom of a plant problem can be a challenge. This is definitely the case with ornamental plants because there are so many different species. What do you need to be a good diagnostician?
After the autumn leaves fall and are cleaned up we start thinking of holidays and of plants that will keep our interest throughout the winter. Though there are many plants with berries and interesting bark that can add interest to the winter landscape, Pennsylvania also offers some native evergreens that can help form a backdrop to deciduous berrying shrubs or highlight dramatic bark.
As the result of efforts by the Pennsylvania Department of Agriculture’s spotted lanternfly survey crews, cooperators (other agencies, Penn State Extension, and other organizations), and the general public, Sven Spichiger, Entomology Program Manager, Pennsylvania Department of Agriculture (PDA) recently reported two new Pennsylvania counties and several new township detection records for the spotted lanternfly (SLF), Lycorma delicatula.
Bull thistle (Cirsium vulgare) is a biennial that true to its name, having notable spines. This plant is much different than Canada thistle.
The spotted lanternfly has now been found in one additional municipality in Berks County; an additional township in Montgomery County and has appeared in parts of Bucks and Chester Counties. The additional quarantined municipalities include Boyertown Borough, Berks County; Douglass Township, Montgomery County; Milford Township including Trumbauersville Borough, Bucks County; and South Coventry Township, Chester County.
Firewood is an important source of heat for many Pennsylvania residents. As the weather turns colder, a lot of folks are gathering firewood for the winter. Unfortunately, firewood is also an important source of invasive problems, and moving it around can spread damaging insects and diseases. You should use local firewood as much as possible.
What is your tolerance for weeds in the landscape? For most folks, they are pests that need to be dealt with promptly and mercilessly. What if you were to look at some of the benefits of these unwanted plants? Would or could you change your mind?
Earthworms play an important role in turfgrass ecosystems through their burrowing activities and by breaking down thatch and organic matter. Burrowing creates channels in soil that improve drainage, reduce compaction, facilitate air exchange, and promote root development.
Fall is the time of year when cool-season turfgrasses recover from summer stress-related conditions; such as drought, heat, and disease. For athletic fields, fall is also the time that turf takes a beating from football and other school sports activities.
A weed that has been spreading in recent years in the nursery and landscape trade is mulberry weed.