See All Ornamentals and Floriculture

Prostrate knotweed (Polygonum aviculare) is a summer annual.

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

Getting to the bottom of a plant problem can be a challenge.

Extension professionals and pesticide industry representatives consistently reminded growers to read the pesticide label thoroughly and observe all precautions listed on the label.

A weed that has been spreading in recent years in the nursery and landscape trade is mulberry weed.

Common field speedwell is a common weed of home lawns, parks, institutional grounds, and golf courses in Pennsylvania.

Horseweed (Conyza canadensis), also known as marestail, reproduces by seed.

Goosegrass (Eleusine indica) is a summer annual grass with a very recognizable growth habit.

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

Dandelion is a perennial weed of lawns, landscape ornamental beds, and nurseries.

As the forsythia comes into full bloom and dandelions show their beauty, one thing is certain; spring is upon us.

Greenhouse production may be year-round and can provide valuable cash flow throughout the year.

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

Purslane (Portulaca oleracea) is a summer annual that forms low growing mats of succulent stems and leaves.

Shepherd's purse (Capsella bursa-pastoris) is a winter annual.

Wild carrot or Queen Anne's lace (Daucus carota) is a biennial.

Not all weeds get a "cool" common name, but yellow rocket (Barbarea vulgaris) is one of them.

Carpetweed (Mollugo verticillata) is a low-growing, multi-shoot annual that grows into a circular mat.

Catchweed bedstraw (Galium aparine) is an annual that can form dense mats of vegetation.

Invasive species have drawn considerable regional and national attention in recent years.

One of our most common landscape pests is the two-spotted spider mite (Tetranychus urticae).

Learn about selected native trees, shrubs, and forbs that can enhance habitat in various sites within home landscapes. Hopefully, you'll be inspired to go learn more about landscaping with natives!

The eastern tent caterpillar has been observed in the United States since 1646. Outbreaks frequently occur at eight to ten year intervals.

Ornamental plantings of holly in Pennsylvania are often damaged by leafmining pests. The native holly leafminer only feeds on the foliage of American holly.

Here we share the benefits and drawbacks of four compost production methods, as well as six straightforward tips for using compost.