Alexi--- Vigoro citrus and avocado fertilizer
Here is a decent fertilizer at Home Depot that is good for mangoes too. It comes in different size bags. You can get a smaller bag if you think you will be getting some 8-3-9 in a few months
I have used this myself. It has minors and is slow release nitrogen
bsb---- Excalibur selling custom made 8-3-9 for $20 for 50lbs is a great deal and is less expensive (per lb) than the 40lb bags that HD and Lowes have as far as fertilizers with
- good NPK numbers
- minor elements
- coated, slow release nitrogen
The straight NPK fertilizers such as 6-6-6 and 10-10-10 are always less expensive because the have no minors plus their nitrogen granules are not (polymer) coated so they are quick release.
Zands, I use that same Bad of Vigoro for all my Mangoes, Lychee and other fruit trees...as much as I would LOVE to purchase the 50 lb bag of Excalibur or Pine Island's special blend it is not cost effective for me since its a over 5 hours round trip for me.
So far I've been happy with the Vigoro as well...I even got it for half price the last time I bought it since the bag was ripped and they had marked it down.
Marin, I have the
Dyna-gro Foliage Pro as well and it is expensive so I use it mostly on my Potted plants...its great stuff though! Its not bad since you only use one teaspoon per gallon of water so it does last a long time.