Acacia new growth not looking right.

[Palm crazy]

This Acacia is having some issues with new growth being really thin & wide, and curling at the tips. This is only happening on the new center growth. I’m going to cut it back a little to see if that helps. Not sure why this happen??? Maybe two much irrigation, fertilizer, or most likely fungus?

[tropicbreeze]

Acacias have phyllodes rather than leaves (although seedlings will initially have leaves). A phyllode is more a modified stem which acts in some ways like a leaf. Looks like what you have there is a phyllode which got confused and thought that it should probably be a proper stem, so it's started sprouting phyllodes like a normal stem would do. I'd leave it, it's only having a little identity crisis. Just humour it along and reassure it that it's a stem and that everything is okay. Lobotomy was never a good solution.

[Palm crazy]

Acacias have phyllodes rather than leaves (although seedlings will initially have leaves). A phyllode is more a modified stem which acts in some ways like a leaf. Looks like what you have there is a phyllode which got confused and thought that it should probably be a proper stem, so it's started sprouting phyllodes like a normal stem would do. I'd leave it, it's only having a little identity crisis. Just humour it along and reassure it that it's a stem and that everything is okay. Lobotomy was never a good solution.

Thanks Tropicobreeze, after doing some research I found out that what happening to my tree is a rare phenomena called Fasciation (See fasciation in acacia).

The curly ones are called Fiddle Fasciation. Interesting stuff…. fasciation in acacia.

[fastfeat]

Fasciation occurs in many plants. Some make unusual, prized horticultural plants, esp. in cacti and succulents. Generally ugly on woody plants.

I think it's most commonly caused by sucking insects.