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Leafy Spurge Flea Beetles - DD Update (06/23/16)

Accumulated growing degree days (AGDD) from NDAWN (sunflower degree days/growth stage application) indicated that leafy spurge flea beetles are getting close to 1,200 when flea beetles should be collected between 1,200 and 1,600 AGDD.

Leafy Spurge Flea Beetles - DD Update

Accumulated growing degree days (AGDD) from NDAWN (sunflower degree days/growth stage application) indicated that leafy spurge flea beetles are getting close to 1,200 when flea beetles should be collected between 1,200 and 1,600 AGDD. Currently, North Dakota ranges from 964 AGDD in the northeast to 1,413 AGDD in the southeast (see map below). After late July (or 1,600 AGDD), flea beetles begin to lay eggs and should not be moved or collected.

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Janet J. Knodel

Extension Entomologist

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