I have tried many other fertalizers for my lemon tree Because it needs alot of it. The problem with alot of them what thatthey needed to be Applied often. This one is good for several weeks, and I can see That the leaves on the plant have turned to a nicer shade of green, instead of yellowish. Another plus is indeed shortly after applying the sticks the plans started Producing more flowers. This is more expensive than some fertalizer, but it worked for me and saves me time by lasting longer than others.