Seasonal weather adjustments can have an effect on wooden; to that end

https://s3.us-east-005.backblazeb2.com/sawnoff/timber-fencing/accomplishing-longevity-with-professional-timber-paling-fence-installers.html

Seasonal weather variations can have effects on picket; to that end, determining hardwoods over softwoods can recuperate sturdiness in harsh climates when building a fence.