I watched a walnut tree lose all its leaves in about ten minutes one time some years ago and I was wondering if this is something that is normal and if not would there be a simple explanation for it.

How could this happen?

  • 5
    what time of the year, what place in the world, what seasonal cues (dry season, wet season), more details please!
    – kevinskio
    Apr 26, 2015 at 23:36
  • Tornado? Light ethylene containing breezes combined with low auxin levels in the leaf/stem interface? en.wikipedia.org/wiki/Abscission#Hormonal Was there an apple tree upwind? Apr 27, 2015 at 10:58

1 Answer 1


Depends what time of year it was - if it was fall (autumn), the air had been still and cold, the leaves had already turned, and a wind or strong breeze arrived, it's entirely possible all the leaves would fall off in five minutes, never mind ten.

Even if the tree had been sick or very short of water, and the leaves had turned to brown, a sudden wind would dislodge them in short order. If you're saying the leaves were green and healthy and growing, and the tree was healthy, then that's a mystery... so yes, more info, in that case.

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