Mango fertilizer routine

Thanks to Brian Wright, president of the Brevard Rare Fruit club, who wrote up in detail on their facebook page what he learned about fertilizing mangoes from Noris Ledesma, Tropical Fruit Curator at Fairchild Gardens:

Mango Tree
Do this every week after the first blooms and after many days of rain!
Spray blooms with Liquid Copper Fungicide, do not over spray…this means the copper will saturate the roots…no good.
(Reference to 2/3 cup is for mango trees no taller than 15ft.)

1. When the blooms first come out
.   a. Add 2/3 cup 0-0-50 granulated potassium (K) on drip line (1/3 cup for trees < 8ft)
.       i. Granulated Sulfate of Potash…not Muriate of potash

2. When about bean size mango
.    a. Add 1 tbsp to each side of tree (Like a Clock….3, 6, 9, 12)
.        i. Granulated Magnesium Sulfate (this is also Epson Salts)

3. One week before fruit is ready to pick
.   a. Use foliar micro nutrients spray, 1 tbsp for each gallon
.       i. Do not use any products with Nitrogen!
.       ii. G.F.C. Green Flag 42L (Manganese, Zinc, Iron, Magnesium, Boron)
. or  iii. Southern AG Fertilizer Citrus Nutritional Spray (Manganese, Zinc, Iron,
.    .   .   Magnesium, Sulfur)
.   b. Add 2/3 cup 0-0-50 granulated potassium (K) on drip line (1/3 cup for trees < 8ft)
.        i. Granulated Sulfate of Potash…not Muriate of potash

4. When ready to prune (after picking; typically in June/July)
.   a. Add 2/3 cup 0-0-50 granulated potassium (K) on drip line (1/3 cup for trees < 8ft)
.       i. Granulated Sulfate of Potash…not Muriate of potash
.   b. Tip the ends for more branching
.        i. Remove vigorous branches

5. End of September
.   a. Add 2/3 cup 0-0-50 granulated potassium (K) on drip line (1/3 cup for trees < 8ft)
.   b. Granulated Sulfate of Potash…not Muriate of potash