Penn State Celebrates 90 Years of Flower Trials
June 17, 2026
Four-lined plant bug damage is very characteristic: circular brown to black spots about one-sixteenth of an inch in diameter. The spots are easily mistaken for disease or frost damage.
A mix of peat moss, vermiculite, or perlite, and compost or organic fertilizers, can provide a suitable environment with sufficient water-holding capacity, nutrient content, and aeration for plant growth and development.