How long until I can wash/wax my car? (new Maaco paint)

As some of you kno I got my car painted black a while ago. I was never told how long I had to wait until i could wash it. I sometimes hit it with the hose to get any dirt/mud/leaves off it, but it really needs to be hit with some soap and wax. How long should I wait? It was painted on the 23rd/24th, but i didnt get it back until the 26th of June. This Monday will the 5th week I have had it. Think its safe to at least wash it wit some sort of soap? it has a slight pollen/dust layer the the hose wont take off, but in an area that i washed (Tree Sap...EEK) that layer was washed off too. Dirt is EXTREMELY noticible on black lol.
 
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