Weeping Larch early defoliation - Knowledgebase Question

Rockford, Il
Question by lynn30232
September 8, 2010
planted gorgeous weeping larch early this spring. Looked great all summer. Has now over 1 week period dropped about 80% of its needles. Had one before and remember yellow period being much longer. Am hoping our shift from extreme extended (unusual) heat changing suddenly to very autumnal temps is accountable for this - does that sound plausible?

Answer from NGA
September 8, 2010


It does sound plausible. Heat stress can cause a newly planted larch to go into winter dormancy earlier than expected. As your tree establishes its root system and becomes more mature, it should behave a little differently, holding onto those needles and showing a gradual change to yellow and finally dropping them after several frosts. Good luck with your landscape!

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