Half thriving

On visiting our daughter and family we passed this tree and she commented that every year it is like this, one half thriving and the other half thinned out, with no idea why. The cloudless clear sky is uninteresting but shows up the contrast between the two halves effectively.

[sally agnew]

Very unusual :)

[Helen Jane]

I thought you had photoshopped it - how strange.

[Suzie Townsend]

A very strange thing to have happen. I could understand one year, but year after year? Strange.