|Flecking Dracaena marginata||New leaves have small white to yellow spots near their tips.||Unknown||Maintain moderate temperature, moisture, and light conditions.|
|Fluoride Toxicity||Long tan to dark brown areas form in the white stripes of "Warneckii" leaves. Leaf tips are yellow or dead on "Janet Craig". Tan dead areas with bright yellow borders form along the leaf margin of "Massangeana" leaves.||Excess fluoride||Maintain soil pH between 6 and 6.5. Avoid using perlite, superphosphate, and other fluoride-containing soil amendments. Do not irrigate with water containing 1 ppm fluoride.|
|Fusarium Leaf Spot||Young leaves have reddish to tan spots with wide, yellow halos. Spotting occurs close to the base of the leaves.||Fusarium moniliforme||Avoid overhead watering. Apply a fungicide to protect healthy plants.|
|Soft Rot||Rooted cuttings have a soft, brown rot and a foul odor. Lower leaves collapse.||Erwinia carotovora pv. carotovora, or Erwinia chrysanthemi||Purchase plants free of the disease. Discard infected plants.|
Prepared by Gary W. Moorman, Professor of Plant Pathology
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Issued in furtherance of Cooperative Extension work, Acts of Congress, May 8 and June 30, 1914, in cooperation with the U. S. Department of Penn State College of Agricultural Sciences research and extension programs are funded in part by Pennsylvania counties, the Commonwealth of Pennsylvania, and the U.S. Department of Agriculture.
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