Avocado, Citrus, Figs, Guavas, and several other subtropicals including Palms consume a large amount of Nitrogen, a small amount of Phosphorus, and a moderate amount of Potash each year when producing significant growth. The annual feeding rate per tree for commercial production is 1 lb (net) of Nitrogen and 2/3 lb of Potash. If significant Phosphorus is present in the soil (as in many clay soils), then any added Phosphorus is ignored and unfortunately washed into waterways. Otherwise, 0.1 to 1/3 lb Phosphorus should be added per tree each year. If you are unsure about your soil, then obtain a soil test kit from your county farm extension office or an independent nursery.
 
In terms of N-P-K, the ratio 3:1:2 is a good guide. For example, fertilizers rated 28-8-18 and 15-5-10 both have a 3:1:2 ratio.
 
In the metropolitan areas of San Diego, feed your subtropicals February through November, skipping Dec. and Jan. when growth is at a minimum. In cooler areas where Citrus is grown, feed March through October. Be sure to water a small amount once per week during winter if it does not rain.

Grow More 28-8-18   Excellent formula for Avocado, Citrus, Figs, Guavas, other subtropical fruits, Palms, and Ornamental Plants. May be used as soil drench, a foliar spray, or with an in-line irrigation system.   28% Nitrogen, 8% Phosphorus, 18% Potash, 8 essential Micronutrients. Produces vivacious growth in plants.   Standard Dosage: Avocado, Citrus, Figs, Guavas, other subtropical Fruit Trees 3.5 lbs (about 7 cups) per tree with 6' x 6' canopy per year. Use one-fourth dose for trees in pots, one-half dose in 1st year for newly planted trees, and 1.5 dose for mature oversize trees.

Price, 5 lb bag: $9.00      Price, 25 lb bag: $38.50

	Grow More Organic Citrus & Avocado 7-3-3, 15 lb bag   Use for container-grown or in-ground planting. All natural, organic -- no sewage sludge.   Standard Dosage: 14 lbs (1 bag) per tree with 6' x 6' canopy per year. Use one-fourth dose for trees in pots, one-half dose in 1st year for newly planted trees, and 1.5 dose for mature oversize trees.
+		Bundle Price: $18.00
	Grow More CITRA-GROW Liquid 0-0-25, 1 QT   Potassium is the most overlooked nutrient for fruit production -- Dr. Thomas Ruehr, Plant Sciences, Cal Poly San Luis Obispo.   Natural potash chelated in citric acid. Excellent supplement when an additional source of potash is needed. Apply as soil drench diluted in 5 gallons of water, or use as foliar spray at rate of 1 ounce per gallon.   When using with Citrus & Avocado 7-3-3 on subtropical fruits: 9 ounces (1 1/8 cups) per tree with 6' x 6' canopy per year. Use one-fourth dose for trees in pots, one-half dose in 1st year for newly planted trees, and 1.5 dose for mature oversize trees.

	Grow More Organic Citrus & Avocado 7-3-3, 15 lb bag   Use for container-grown or in-ground planting. All natural, organic -- no sewage sludge.   Standard Dosage: 14 lbs (1 bag) per tree with 6' x 6' canopy per year. Use one-fourth dose for trees in pots, one-half dose in 1st year for newly planted trees, and 1.5 dose for mature oversize trees.
+		Bundle Price: $17.50
	Grow More Organic Sul-Po-Mag 0-0-22, 4 lb box   Source of natural potash and sulfur. This mineral is mined directly from the ground and mechanically sorted for purity.   When using with Citrus & Avocado 7-3-3 on subtropical fruits: 1.1 lb (¼ box or 1 1/3 cups) per tree with 6' x 6' canopy per year. Use one-fourth dose for trees in pots, one-half dose in 1st year for newly planted trees, and 1.5 dose for mature oversize trees.

	Grow More Citrus Food 20-10-15, 1.5 lb jar   Perfect for patio gardeners with 1 or 2 small citrus grown in a pot. Improves fruit color, firmness, and date of maturity. Plants respond with improved vigor.
+		Bundle Price: $10.50
	Grow More Citrus Grower Blend 1.7-0-5, 1.5 lb jar   Provides readily available source of chelated Iron, Zinc, Manganese, and Copper. Potassium is also included for sweeter, robust fruit.