US: Delayed shipments can stress vegetative cuttings

Winter weather can turn any trip into an adventure. Over the past few weeks, a combination of freezing rain and snow across the southern U.S. has caused significant transportation delays on highways and airways alike. Given that shipping season for vegetative cuttings began in earnest several weeks ago, the likelihood that some of these shipments were caught up in the turmoil is almost guaranteed.

During recent visits to local greenhouses, growers have been showing Jeremy Jubenville of Michigan State University Extension vegetative cuttings with chlorotic and necrotic leaf margins on lower leaves. In most cases, these cuttings were delayed in shipment for at least 24 hours because of something related to the winter weather. The yellowing leaf tissue could be a symptom of exposure to increased levels of ethylene or an indication that the cuttings are starved for energy (sugars).

Read more at MSU Extension

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