They aren't sitting in water or anything like that are they? Too much fertilizer? Seems like there may be "too much" of something going on. Let the top 3 inches of soil get dry before watering again. Make sure it is indeed draining properly.

no there in a potting soil with pine bark mixed in so there draining fine i water every 4th day about i have a moisture meter and wait til it's pretty dry.and i havent fertilized yet. maybe it's just to soon for growth, but every tree i ever had put out growth in 1 to 2 weeks so this is weird.

How much sun are you giving it and how hot has it been where you live?

it's on my deck and gets full sun.i have heard they are slow growers but i thought i would see somthing by now.

the same happened to my mango tree after about 4 months of having it. I started watering it with the hose on pretty hard and all the water was splashing up on the leaves. It wasn't growing very good so I thought I would give it tons of water to see what would happen. Stupid!!!!!!! it ended up getting anthracnose I guess because the leaves resembled the same as I read about anthrac. Anyways I ended up cutting all the leaves off and know after about 3 or 4 months of burnt buds and burnt leaves(which would sometimes grow healthy then become disease riden) it is know doing really good. One more thing, it seems to like a lot's of sun but not full.

hope I helped