Re: Fertilizer - which one?
Nursery Fertilizers
Banana Fuel: 15-5-30. Great for the tropics but in the U.S. (esp. the midwest) you'll need Nitrogen supplement.
Going Bananas: 9-3-27. An excellent Potash supplement.
Grow More or Scotts (Fruiting Bananas): 20-5-30 natural water soluble with minors; maximum of 5 lbs (8.5 cups) per year per plant in the ground. For example, in a 10-month growing season apply 3/4 cups of 20-5-30 per month. Dissolve in water before applying.
Grow More or Scotts (Ornamental Bananas): 28-8-18 natural water soluble with minors; maximum of 3.6 lbs (6 cups) per year per plant in the ground.
Potassium Nitrate, also known as Saltpetre in Europe: 13-0-38 natural water soluble in pure form. Excellent potash supplement, also strong enough to be used on tree stumps for removal.
Seaweed Extract: typically 0.1-0.1-1.5 plus significant quantity of the plant hormone gibberellic acid.
Stokes Tropicals Banana Blend: 3 months controlled released fertilizer 6-2-12 w/minors.
Sul-Po-Mag, also called K-Mag: 0-0-22 plus 10.5% Magnesium, 22% Sulfur, and less than 2.5% Chlorine. Careful, in addition to Potash it contains large amounts of Magnesium, Sulfur, and a significant amount of Chlorine. It is an excellent potash supplement and soil acidifier but I do not recommend applying more than 1 lb per year to bananas.
I copied this from the fertilizer wiki. Bananas are heavy potassium feeders and need quite a bit of it through out their life. The fertilizer that you posted above is 12-4-6. I personally use 6-3-16 at a rate of one pound per mat per month.
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Currently growing, Ae Ae, Patupi, French red, Goldfinger, Namwa, Ice cream, Raja puri, Pisang raja, Lacatan, Double mahoi, Brazilian, Manzano, Mysore, Veinte cohol, Sh-3640, Sweetheart, Mona lisa, FHIA-21, and Kandrian
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