Olla use for high density fruit tree planting?
I'm 35 or so miles NW of Houston in zone 8b. I ordered three apple trees (Fuji, Gala, Pink Lady) all on M7 rootstock that should ship this week from a northern nursery. I m considering planting the three in the same hole ~24" apart in a triangle shape. I use ollas for my potted berries and the plants seem to enjoy them (so do the fire ants). Since the trees will be in a triangle shape an olla centrally located seems to me to be a logical way to keep them hydrated through a typical Texas summer. One olla maker suggests it is only appropriate for vegetables & such and not for trees. They don't explain why though so I am asking the forum. Does anyone know if the use of an olla for fruit trees is a bad idea?