|'Hark' pecan bark|
Bark appearance is controlled both genetically and by the growth rate of the tree. A fast growth rate serves only to exaggerate any form of bark exfoliation. If you look carefully at the bark of different pecan cultivars, you will soon notice distinct patterns of appearance. Let me show you a few examples.
|'Major' pecan bark|
|'Hirschi' pecan bark|
The bark of Hirschi also appears to crack in square patches (photo at right) but it does not take on the scaly appearance found with Major trees . This bark pattern is not terribly unique among pecan cultivars so it is difficult to identify Hirschi by bark appearance alone.
|'Giles' pecan bark|
Giles trees have a more furrowed bark appearance (Photo at right). The look is mostly non-descript and gives no clue as to the cultivar. The bark simply looks like bark should look.
There are many cultivar characteristics that can be used to identify a pecan cultivar. Bark appearance is cultivar specific but only some pecan cultivars produce bark so distinctive that it sets them apart from other cultivars.