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E-GRO Alert – Zinnia: tip burn of young leaves


July 23, 2014
By by Brian E. Whipker NC State University

July 23, 2014 — Leaf tip necrosis is a common problem encountered during
summer production of zinnias. This problem is due to an environmentally
induced calcium deficiency.

July 23, 2014 — Leaf tip necrosis is a common problem encountered during summer production of zinnias. This problem is due to an environmentally induced calcium deficiency.

The flower power and low production cost of zinnias (Zinnia elegans) have turned this plant into a major summer colour crop. During periods of high humidity, tip burn of the leaves that surround the flower bud has been reported.

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This e-GRO Alert identifies the cause of this disorder.


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