See All Ornamentals and Floriculture

Hydrangeas are one of the most popular flowering shrubs for many reasons.

Parrotia persica, also known as Persian ironwood, is native to a relatively small region of northern Iran and Azerbaijan, near the southern edge of the Caspian Sea.

Lacebark pine, Pinus bungeana, is native to eastern and central China.

Gain practical updates on pest and disease management, water quality, pollinator assessment, and the latest Penn State Flower Trials in this research-driven program for greenhouse professionals.

Learn to identify and manage greenhouse and interior plantscape pests using effective biological and chemical control strategies.

Participants in this one-day pesticide update receive research-based information and recertification credits in hard-to-find categories.

Earn pesticide credits while learning to identify and manage box tree moth and broadleaf tree diseases in this two-hour webinar for Green Industry and horticulture professionals.

Connect with green industry experts at this event featuring research, techniques, and tools for success. Earn credits, attend diverse sessions—including Spanish-language—and enjoy an arboretum tour.

Join the Master Gardeners for a bus trip to the Philadelphia Flower Show to explore stunning floral displays, garden designs, and unique plants at the nation’s premier horticultural event.

Creeping buttercup is a stoloniferous plant that spreads through thin turf, forming patches in lawns and parks.

Cut flower pest, disease, and production update for Pennsylvania growers.

Bull thistle (Cirsium vulgare) is a biennial that, true to its name, has notable spines. This plant is much different than Canada thistle.

Sandy Feather, extension educator in Allegheny county, has prepared this list of trees, shrubs, annuals and perennials that don't just survive but will thrive in our long, hot summers.

Eastern redbud (Cercis canadensis) is a small, graceful tree native to the eastern and central United States.

American yellowwood, Cladrastis kentukea, is a great shade tree and a lovely flowering tree.

Picturesque may be the first word that comes to mind when describing the Japanese white pine, Pinus parviflora.

Beneficial insects are those that consume or parasitize insect pests.

Cut flower pest, disease, and production update for Pennsylvania growers.

Learn the science and practice of stem cutting propagation in this one-hour webinar, exploring root formation, cutting types, and the key factors that influence success or failure.

Japanese honeysuckle is an invasive, non-native climbing vine.

Annual fleabane, also called daisy fleabane, is a common and fast-growing broadleaf weed found in Pennsylvania lawns and other low maintenance turf areas. Its common name comes from folklore claiming dried plant material will repel fleas.

Wild onion (Allium canadense) and wild garlic (Allium vineale) are perennial plants that can be a weed in turfgrass and landscape beds.

Yellow woodsorrel (Oxalis stricta) has foliage (composed of three leaflets) that resembles white clover or black medic.

Prostrate knotweed (Polygonum aviculare) is a summer annual.

Poison hemlock (Conium maculatum) appears to have become more abundant over the past few years.