http://worldwidewattle.c...ry/maidenii.php?id=23731http://plantnet.rbgsyd.n...p;lvl=sp&name=Acacia~maidenii
https://www.dmt-nexus.me...aspx?g=posts&t=53046https://www.dmt-nexus.me...aspx?g=posts&t=53046This tree may get much larger. Also has active constituents in its phyllodes so no question about possibly damaging it with bark harvesting. Apparently there are a few subspecies, some having higher amounts... If growing within the more temperate regions of the U.S., I would imagine it would be quite hardy if pruned and kept at 4-5'+.
First 2 years I would keep it inside and third year try it out for a winter while wrapping it during freezes. Also, pruning Acacias down to the base before winter may help elongate its survivability, though that is something very difficult to accomplish when you grow immensely attached to the plant!
Keep its environment well-drained, never water-logged and good luck!
As an ornamental it is common in coastal and southern-California parks, roadsides and urban areas where it flourishes in a variety of environments. If you are growing other plants and wish to maintain healthier soil, plant the Acacia near that. African Acacias are utilized to maximize crop yields in agriculture. Guajillo is an extremely popular crop-multiplier from California to Texas in the United States. I do not have any A. Maidenii outside in the PNW though I am planting out A. Baileyana and A. Melanoxylon this year as ornamentals.
Mind the wind! Acacias may sustain freezing temperatures but may get taken out by harsh winds.