Dr. Michael A. Dirr, Ph.D. has a love affair with plants that has propelled him on a straight-line trajectory through life. “I think I jumped out of the womb and I wanted to be a gardener,” he stated during a recent interview.
Eastern redbud – Cercis canadensis – is small, graceful tree native to the eastern and central United States. It is typically found in open woodlands, thickets, woodland margins, and along streams and bluffs, often on limestone soils.
If you are in an area of Pennsylvania where ticks and Lyme disease are a way of life, it’s already time to be on alert.
The USDA’s Risk Management Agency (RMA) reminds Pennsylvania nursery producers to be aware that the final date for a new applicant to apply for 2015 nursery crop insurance is May 1, 2014.
Last month, the Green Industry website had an article about Devil’s Walking Stick (Aralia spinosa) in which I gave a brief description of the plant and made a comment about the stand in my landscape.
Invasive species have drawn considerable regional and national attention in recent years.
Yellow woodsorrel (Oxalis stricta) has foliage (composed of three leaflets) that resembles white clover or black medic.
This is the highest honor given to American Phytopathological Society (APS) members in recognition of meritorious contributions to the discipline of plant pathology. Moorman will be named a Fellow at the national meeting in August 2014 in St. Paul, Minnesota, recognizing his more than 30 years of service to the profession.
Not only do you and I look forward to Spring weather, fungi, bacteria, phytoplasmas and other plant pathogens also gear up for the season.
Nimblewill (Muhlenbergia schreberi) is a perennial grass that becomes a weed in established turfgrass. However, it is not limited to maintained areas and grows in undisturbed areas, nurseries and farmland.
The dense, rounded clusters of yellow flowers on corneliancherry dogwood (Cornus mas) that appear while the rest of the landscape is still cloaked in winter’s grays and browns will be a welcome relief from this long, cold winter.
In the past 25 years a great development has occurred in tissue culture plant production for horticulture, and today it is possible to purchase from a number of laboratories stage III tissue culture plantlets that are grown through stage IV in greenhouses.
Seedbed establishment for fine turf can be extremely difficult, and is often considered an art form. Whether it is creating a seedbed for a new putting green or for a home lawn, several factors can make effective seedbed establishment difficult.
Sodium chloride remains the predominant de-icing compound utilized by residential property owners, township supervisors, and landscape contractors in our region.
At the edge of my yard, I have several shrub thickets of Aralia spinosa (devil’s walking stick) blending in with the naturalized areas. The unique common name comes from the large thorn-like structures that line the stem. It is a shrub that you don’t want to rub against while working in the vicinity.
Ice and persistent snow cover will be the primary reasons for winterkill in the Northeast.
This winter's low temperatures and high energy prices have greenhouse operators across the state looking for ways to manage heating and power costs. Penn State Agricultural Engineer Dan Ciolkosz addressed this topic at a recent Extension greenhouse meeting held at Gumto Greenhouses near Butler, PA. According to Ciolkosz, the key to energy conservation is in eliminating unnecessary waste by using high efficiency equipment, turning things off when not in use, and re-using energy when practical.
You’ve observed dieback in the crowns of a several recently planted green ash trees on a property that you’re responsible for in your work area. Some of the trees have declined in recent years, and your clients want you to diagnose the problem and save their ash trees from any further decline.
You know the situation…you and your crew spent days cleaning, pruning and moving perennial and nursery stock into your overwintering houses. After a few weeks you walk through and notice some of the pots have half the media volume they had when you moved them!
Each year in February, horticultural professional growers, educators, and hobbyists are putting the finishing touches on their projects for the grand and delightful Philadelphia Flower Show.