P&PDL Picture of the Week for
February 25, 2008

Leaf tip burn on Oriental lilies

Roberto Lopez, Department of Horticulture & Landscape Architecture, Purdue University

A general problem associated with Oriental lilies is calcium deficiency. Leaf symptoms include necrosis of leaf tips and foliar distortion. It is important to confirm this problem by submitting leaves to a reputable lab for a foliar nutrient analysis. You may read more about this problem at: Leaftip burn on Oriental lilies

Work by Dr. William Miller and Alex Chang at Cornell University has shown that a very effective means of preventing upper leaf necrosis is to blow air down onto the plant. Sufficient airflow to cause the upper leaves to gently move is enough. This leaf movement helps the young leaves draw water (and calcium) into them, and thereby reduces the problem.

Click image to enlarge

Tip burn on Stargazer lily from low calcium.
Erik Runkle & Royal Heins - Horticulture, MSU

Calcium deficiency on Stargazer lilies
Erik Runkle & Royal Heins - Horticulture, MSU

Roberto Lopez, Horticulture & Landscape Architecture, Purdue

Roberto Lopez, Horticulture & Landscape Architecture, Purdue

Roberto Lopez, Horticulture & Landscape Architecture, Purdue

Roberto Lopez, Horticulture & Landscape Architecture, Purdue

Roberto Lopez, Horticulture & Landscape Architecture, Purdue

Purdue Plant & Pest Diagnostic Lab Purdue Cooperative Extension Service