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Citrus & Avocado Fertilizer 14-4-14 is a granular fertilizer that you spread on the soil around citrus and avocado trees and water in. It supplies 14% nitrogen, about a third of it as water-insoluble methylene urea that soil microbes release gradually, 4% available phosphate (P₂O₅), 14% soluble potash (K₂O), 2% magnesium and 15% sulfur, with DTPA-chelated iron, plus manganese, zinc, copper, boron and molybdenum. It replaces our water-soluble 14-6-4, and it is spread, not dissolved.
The University of California’s home-garden guidance (UC IPM) says mature citrus and avocado trees need regular nitrogen, while most other nutrients are usually present in the soil in sufficient amounts. So the amounts here follow UC’s yearly nitrogen by tree age: 7.14 lb (3,240 g) of this product a year for a full-size tree in its fifth year or later, less for younger trees. It does not dissolve completely, so it is not for drip systems or sprays; it is not chloride-free; and its iron is a routine amount that does not correct iron chlorosis.
14-4-14 · 2% Mg · 15% S Equal nitrogen and potash, with magnesium, sulfur and six micronutrients
7.14 lb (3,240 g) a year For a full-size tree in its fifth year or later: UC’s 1 lb of nitrogen ÷ 0.14
2 or 3 feedings Citrus in January or February, May and perhaps June; avocado in fall or winter. The calculator works out each feeding and the bag
Product facts & composition
Guaranteed analysis and specifications of Greenway Biotech Citrus & Avocado Fertilizer 14-4-14
Specification
Detail
Grade
14-4-14
Total nitrogen (N)
14%: 7.5% ammoniacal nitrogen, 0.4% urea nitrogen, 1.2% other water-soluble nitrogen, and 4.9% water-insoluble nitrogen. The water-insoluble part, about 35% of the nitrogen, comes from methylene urea.
Available phosphate (P₂O₅)
4%
Soluble potash (K₂O)
14%
Magnesium (Mg)
2%
Sulfur (S)
15%
Iron (Fe)
0.15%, all of it chelated with DTPA
Manganese (Mn), zinc (Zn), copper (Cu)
0.1%, 0.1% and 0.05%, from sulfates (not chelated)
Not chloride-free. Its sulfate of potash magnesia alone can carry up to 2.5% chloride, about 0.5% of the product, and its potassium sulfate can add a little more
Calcium
No calcium is added or guaranteed. If a soil or leaf test shows calcium is low, supply it separately
Form
Dry granular blend that you weigh, spread on the soil, and water in. Not water-soluble
In a mature tree’s yearly amount, 7.14 lb (3,240 g)
1 lb (454 g) nitrogen, 159 g (0.35 lb) of it water-insoluble; 454 g (1 lb) soluble potash; 130 g (0.29 lb) available phosphate; 65 g (0.14 lb) magnesium; 486 g (1.07 lb) sulfur; about 5 g of iron
Percentages are by weight of product: each pound supplies 0.14 lb of nitrogen and 0.14 lb of soluble potash. Weigh the product for every feeding. We don’t give cup or scoop measures, because the weight of a cupful of these granules has not been measured.
Best uses & benefits
Choose it when you feed citrus or avocado trees in the ground and want each tree’s yearly nitrogen, with an equal weight of potash, magnesium, sulfur and micronutrients, from one weighed, granular product.
Home citrus trees
Oranges, mandarins, lemons, limes and grapefruit. UC IPM gives citrus a yearly nitrogen amount that grows with the tree’s age, applied in January or February just before bloom, in May, and perhaps in June. The calculator turns that into weighed amounts of this product.
Home avocado trees
UC IPM gives avocados the same yearly nitrogen amounts by age as citrus, applied in fall or winter. Its zinc is zinc sulfate, the form California’s avocado guideline (CDFA FREP) uses for avocados, but at 0.1% it is a routine trace in the feed, not a correction for a deficiency.
Potash with the nitrogen
A mature tree’s yearly amount supplies about 454 g (1 lb) of soluble potash, the same weight as its nitrogen. CDFA FREP’s removal figures put that at about what 420 to 560 lb of oranges or 120 to 140 lb of avocados carry away at harvest. A leaf analysis shows whether a tree needs more.
Part of the nitrogen held back
About a third of the nitrogen is water-insoluble methylene urea. Soil microbes have to break it down before trees can use it, so it is released gradually after each feeding rather than all at once, and more slowly in cold soil (see How it works).
Where it is a poor fit
Drip, micro-sprinkler, fertigation and foliar sprays. It is a granular blend, and its water-insoluble nitrogen does not dissolve, so it can clog emitters and injectors. Use a fully water-soluble fertilizer for those systems.
Citrus in containers, and first-year trees. UC IPM says trees in containers with restricted root space may need less fertilizer, and it gives first-year trees a tablespoon measure rather than a weight. We don’t give an amount for either.
Yellow (chlorotic) trees. A mature tree’s yearly amount carries only about 5 g of iron, and DTPA iron loses chelation as soil pH rises (see How it works), so this product will not correct iron chlorosis. Where soil pH is above about 7.5, or the soil has free lime, an EDDHA iron chelate is the stable form.
Trees already showing chloride injury. It is not chloride-free (see Rates). If a leaf analysis shows chloride toxicity, use a fertilizer that adds no chloride.
Other fruit trees, lawns, and vegetables. The amounts here are for citrus and avocado trees only.
Commercial orchards. California’s orchard guidelines set nitrogen from yield, rate trials, and leaf analysis (see Rates). For orchard quantities, ask us for a bulk quote.
Application rates & directions
The amounts below convert UC IPM’s yearly nitrogen amounts for home citrus and avocado trees into weighed amounts of this 14-4-14. Each pound of product supplies 0.14 lb of nitrogen, so pounds of product = pounds of nitrogen ÷ 0.14. UC IPM gives the same amounts for citrus and for avocado; the timing differs. If the directions printed on your package differ from this page, email questions@greenwaybiotech.com before you apply it.
Yearly nitrogen per tree by age for citrus and avocado trees in the ground (UC IPM), converted to Citrus & Avocado Fertilizer 14-4-14
Tree age
Actual nitrogen per tree per year (UC IPM)
14-4-14 per tree per year
Each of 3 feedings
Each of 2 feedings
1st year
Not given as a weight (UC: 1 tablespoon of a nitrogen fertilizer, 3 times a year)
Not given
Not given
Not given
2nd year
0.25 lb
1.79 lb (810 g)
270 g (0.6 lb)
405 g (0.89 lb)
3rd year
0.5 lb
3.57 lb (1,620 g)
1.19 lb (540 g)
1.79 lb (810 g)
4th year
0.75 lb
5.36 lb (2,430 g)
1.79 lb (810 g)
2.68 lb (1,215 g)
5th year and older
1 lb
7.14 lb (3,240 g)
2.38 lb (1,080 g)
3.57 lb (1,620 g)
These amounts are for full-size trees. UC IPM notes that dwarf trees and trees in containers with restricted root space may require less fertilizer, and UC Master Gardeners in Santa Clara County advise reducing the amount proportionately for semi-dwarf and smaller citrus trees. UC gives first-year trees a tablespoon of a nitrogen fertilizer, a volume rather than a weight, so it can’t be converted to this product; email questions@greenwaybiotech.com for help with a newly planted tree.
When to feed citrus
UC IPM advises applying nitrogen in January or February, just before bloom, then a second application in May and perhaps a third in June, dividing the year’s amount into 2 or 3 applications. Avoid late-season feeding: UC IPM says it may affect fruit quality, delay fruit coloring, and make the rind rough.
When to feed avocado
UC IPM says nitrogen for home avocado trees should be applied in fall or winter. It gives the yearly amount without setting a number of feedings, so the table shows the amount for 2 or 3 equal feedings. California’s orchard guideline (CDFA FREP) describes a different program for commercial groves, with most nitrogen in spring just after full bloom and in mid- to late summer; follow one program or the other, not both. If a tree is recovering from frost or fire damage, FREP advises waiting until new growth starts before applying nitrogen.
Where to put it
Keep fertilizer off the trunk. University of Florida IFAS (HS132) advises avoiding fertilizer near or in contact with the trunk, covering the basin area around a tree in its first year, and in later years spreading it as many feet beyond the edge of the canopy (the drip line) as the tree is old in years, up to ten. Spread the weighed granules evenly over that area, then water the area thoroughly so the fertilizer moves into the soil. For avocados, California’s avocado guideline (CDFA FREP) advises broadcasting granular fertilizer evenly over the area the irrigation wets, just before an irrigation or expected rain, without working it into the soil, because avocado roots are shallow.
Not for drip systems or sprays
This is a granular blend, and about a third of its nitrogen is water-insoluble, so it does not dissolve completely. Don’t dissolve it for a drip system, micro-sprinklers or an injector, and don’t spray it on leaves. Spread it on the soil and water it in.
Zinc, iron and other micronutrient deficiencies
UC IPM notes that citrus and avocados occasionally run short of zinc or iron, and says these deficiencies can be corrected with a foliar spray of a liquid chelated micronutrient solution as new growth emerges in spring, or with micronutrients in sulfate form, such as zinc sulfate, applied to the soil. A mature tree’s yearly amount of this product carries about 5 g of iron and about 3 g each of zinc and manganese: a routine feeding, not a correction for a deficiency. For avocado zinc, CDFA FREP states that zinc EDTA is not effective on avocados and uses zinc sulfate, fertigated as a liquid or banded for deficient trees; see Zinc Sulfate. For iron in alkaline soil, see How it works.
Potassium, phosphorus and leaf analysis
A mature tree’s yearly amount of this product supplies about 454 g (1 lb) of soluble potash (K₂O). CDFA FREP reports that 1,000 lb of harvested oranges removes 1.78 to 2.36 lb of K₂O and that avocados remove 7.2 to 8.4 lb of K₂O with each 1,000 lb of fruit, so this product’s potash matches what about 420 to 560 lb of oranges or 120 to 140 lb of avocados remove. FREP adds that avocados do not reliably respond to potassium fertilizer. Decide on extra potassium from a leaf analysis: for citrus, FREP samples leaves in September or October and recommends keeping leaf potassium above 0.7%; for avocado, it samples the youngest fully expanded spring-flush leaves, 5 to 7 months old, between mid-August and mid-October. For phosphorus, FREP notes that it rarely if ever needs to be applied in a well-managed avocado orchard and that excess phosphorus may cause copper and zinc deficiency in citrus. This product’s 4% supplies about 130 g (0.29 lb) of available phosphate in a mature tree’s year, so check a soil test before adding phosphate beyond this feeding.
Chloride
This formula is not chloride-free. Its sulfate of potash magnesia alone can carry up to 2.5% chloride, about 0.5% of the product, or about 16 g (0.6 oz) in a mature tree’s yearly amount, and its potassium sulfate can add a little more. Potassium chloride, by comparison, is about 47% chloride. California’s avocado guideline (CDFA FREP) says potassium chloride should be used with caution, especially on saline soils or where irrigation water is high in chloride, and not at all when leaf chloride shows toxicity. If a leaf analysis shows chloride toxicity in your citrus or avocado trees, use a fertilizer that adds no chloride.
Commercial orchards
California’s orchard guidelines (CDFA FREP) set orchard nitrogen from rate trials, the nitrogen removed with the expected crop, and leaf and soil analysis. For mature citrus, FREP cites a Tulare County navel orange trial in which maximum production came at 1.0 to 1.5 lb of nitrogen per tree a year, and advises completing nitrogen applications by early fall to avoid stimulating late growth. For avocado orchards fertigated through low-volume irrigation, it gives 47 to 89 lb of nitrogen per acre for expected yields of 3,000 to 18,000 lb an acre, at 145 trees an acre. For orchard quantities, email questions@greenwaybiotech.com for a bulk quote.
Other uses
We don’t give amounts for citrus or avocado in containers, first-year trees, drip or foliar use, other fruit trees, lawns, or vegetables. For any of these, email questions@greenwaybiotech.com with your plants, how they are grown, and any soil or leaf test.
How to use Citrus & Avocado Fertilizer 14-4-14
Find the amount. Look up your tree’s age in the table above, or use the calculator, for the weight per feeding. Use less for dwarf and semi-dwarf trees.
Time it. Citrus: January or February before bloom, May, and perhaps June, with no late-season feeding. Avocado: fall or winter.
Weigh it. Weigh the granules on a kitchen or postal scale. Don’t measure by the cup or scoop.
Spread it around the tree, not against it. Scatter it evenly over the ground from the area under the canopy out beyond the drip line, keeping it off the trunk.
Water it in, and check once a year. Water the area thoroughly after spreading. A yearly leaf analysis shows whether the tree needs more nitrogen, potassium or micronutrients than this feeding supplies.
Calculator & choosing a size
Formulas. Pounds of product per tree per year = pounds of nitrogen for the tree’s age (0.25, 0.5, 0.75 or 1 lb in the tree’s 2nd, 3rd, 4th, or 5th and later year) ÷ 0.14. Each feeding = the year’s amount ÷ the number of feedings (2 or 3). Multiply by the number of trees. Grams = pounds × 453.6.
Worked examples.
One orange tree in its sixth year, fed 3 times: 7.14 lb (3,240 g) a year ÷ 3 = 2.38 lb (1,080 g) per feeding. A 5 lb bag covers the first feeding and the second. The whole year takes a 10 lb bag.
Three avocado trees in their third year, fed 3 times: 3.57 lb (1,620 g) a year per tree ÷ 3 = 1.19 lb (540 g) per tree per feeding, so 3.57 lb (1,620 g) per feeding for all three. A 5 lb bag covers the first feeding. The whole year, 10.71 lb (4,860 g), takes a 25 lb bag.
One lemon tree in its second year, for the whole year: 1.79 lb (810 g), 270 g at each of 3 feedings. A 2 lb bag covers it.
About how many trees’ worth of feeding each bag of Citrus & Avocado Fertilizer 14-4-14 holds, at UC IPM’s yearly amounts
Bag size
Second-year trees for a year (1.79 lb each)
Trees in their 5th year or later, one of 3 feedings (2.38 lb each)
Trees in their 5th year or later, for a year (7.14 lb each)
1 lb
0.5
0.4
0.1
2 lb
1.1
0.8
0.2
5 lb
2.8
2.1
0.7
10 lb
5.6
4.2
1.4
25 lb
14.0
10.5
3.5
Figures are rounded down to one decimal place, so a bag never looks larger than it is.
The calculator below asks what you are feeding, the tree’s age, how many trees, and how many feedings you will split the year into. It applies UC IPM’s amount for that age, shows each feeding and the year’s total, and recommends bags for the first feeding or, if you choose, the whole year: the smallest single bag that covers it, or the lowest-price set of bags when no single bag is large enough, plus a lower-price combination when one saves at least $1. Prices, tax, and shipping are confirmed at checkout, and availability is confirmed when you add to cart.
The calculator needs JavaScript. If it does not appear, use the tables and formulas above to choose a size.
How Citrus & Avocado Fertilizer 14-4-14 works
Nitrogen. UC IPM notes that mature citrus and avocado trees need regular nitrogen, while most other nutrients are usually present in the soil in sufficient amounts, which is why the amounts here follow nitrogen. This formula carries its nitrogen in two kinds. About two thirds is ammoniacal, urea, and short-chain methylene urea nitrogen, which dissolves when you water it in. The other third is water-insoluble methylene urea. Cornell University’s nitrogen best-practice guidance explains that methylene urea needs microbial activity to release its nitrogen: urea is released, an enzyme converts it to ammonium, and soil bacteria convert the ammonium to nitrate. It also notes that little nitrogen is released unless the soil is warmer than about 50°F. So part of each feeding is released gradually after the soluble part, and slowly in cold soil.
Soil pH. Purdue University’s Vegetable Crops Hotline explains that ammonium-based fertilizers can lower soil pH over time, partly through acidity released as bacteria convert ammonium to nitrate, and that urea behaves like them once it breaks down to ammonia. All of this formula’s nitrogen is ammoniacal or urea-based, so repeated feeding tends to acidify the soil where it is spread. Don’t count on it to fix alkaline soil, though: where soil contains free lime (it fizzes when you drip vinegar on it), Colorado State University Extension says lowering soil pH is difficult to impossible and impractical.
Iron and the other micronutrients. The iron is chelated with DTPA, which stays chelated at higher soil pH than an EDTA chelate does. University of Florida IFAS (HS1208) reports that at pH 6.0 iron EDTA, DTPA, and EDDHA are all fully chelated, but at pH 7.5 half of DTPA iron remains chelated, against 2.5% of EDTA iron and all of EDDHA iron. So in neutral to slightly alkaline soil this product’s iron holds up better than an EDTA iron would, but above about pH 7.5, or in soil with free lime, EDDHA is the stable form. The manganese, zinc, and copper are sulfates, not chelates. In any soil, the micronutrients are part of a routine feeding, not a correction for a deficiency.
Potassium, magnesium and sulfur. The potash comes from potassium sulfate and sulfate of potash magnesia, which also supplies the magnesium; both carry sulfur, as does the ammonium sulfate. Because most nutrients other than nitrogen are usually present in the soil in sufficient amounts, a leaf analysis is the way to tell whether a tree needs more of any of them.
This describes citrus and avocado nutrition and these ingredients in general; it is not a trial of this finished product.
Compare your options
Match the product to what your tree needs. Analyses for the other products are as shown on their pages.
Citrus & Avocado Fertilizer 14-4-14 compared with other Greenway products used on citrus and avocado
Option
Supplies
Choose it when
Limitation
Citrus & Avocado 14-4-14, this product
Nitrogen, part of it water-insoluble; phosphate; potash; magnesium; sulfur; micronutrients with DTPA iron
You want a tree’s yearly nitrogen and a matching weight of potash, with secondary nutrients and micronutrients, in one granular product
Not for drip or sprays; not chloride-free; its iron is not a chlorosis correction; no container amount
You need to lower soil pH and the soil has no free lime
Slow, over months; impractical in soil with free lime
Related products & compatibility
This formula covers a tree’s yearly nitrogen and a matching weight of potash, with routine secondary nutrients and micronutrients. These products fill the gaps a test may show.
Chelated Iron DTPA 11% Fe: iron at correction rates. DTPA iron is fully chelated at pH 6 and about half chelated at pH 7.5; above that, or in soil with free lime, an EDDHA chelate is the stable form. Its page gives its label’s directions for trees.
Zinc Sulfate: the zinc source California’s avocado guideline uses for deficient trees.
Potassium Sulfate 0-0-53: extra potassium for a heavily bearing tree when a leaf analysis shows it is low, from a sulfate rather than a chloride. Its page gives amounts for fruit trees.
Same program, separate amounts. The amounts on this page assume this product is the tree’s nitrogen source. If you also give a tree another nitrogen fertilizer, such as ammonium sulfate or Nitroform, count its nitrogen in the year’s total and reduce this product to match. Apply each product at its own rate rather than blending them.
Handling, storage & limitations
Protective equipment. Wear gloves and eye protection when weighing and spreading. Avoid raising or breathing dust, and wash your hands afterward.
Storage. Keep the bag closed in a cool, dry place, away from food, feed, drinking water, acids, alkalis and oxidizers, and out of reach of children and pets.
Use limits. Weigh every feeding and don’t exceed the amount for the tree’s age. Keep it off the trunk and leaves, and water it in. Don’t feed citrus late in the season.
Not for drip or sprays. Don’t dissolve it for drip, micro-sprinkler or injector systems, or spray it.
Chloride. It is not chloride-free; don’t use it on trees whose leaf analysis shows chloride toxicity.
Spills. Sweep up spilled granules, and keep them out of drains and waterways, where nitrogen and phosphate feed algae.
First aid, general precautions. Eyes: flush with clean running water for at least 15 minutes, and get medical attention if irritation persists. Skin: wash with soap and water. Swallowed: rinse the mouth and call Poison Control at 1-800-222-1222. Follow any first-aid directions printed on the package.
Frequently asked questions
What does Citrus & Avocado Fertilizer 14-4-14 supply?
It supplies 14% nitrogen, including 4.9% water-insoluble nitrogen from methylene urea (about 35% of the nitrogen), 4% available phosphate (P₂O₅), 14% soluble potash (K₂O), 2% magnesium, and 15% sulfur, with 0.15% iron chelated with DTPA, 0.1% manganese, 0.1% zinc, 0.05% copper, 0.01% boron, and 0.001% molybdenum. No calcium is added or guaranteed, and it is not chloride-free.
What changed from the 14-6-4?
This 14-4-14 replaces our water-soluble Citrus & Avocado Fertilizer 14-6-4. It is granular and spread on the soil rather than dissolved, so it is not for drip systems. It carries the same 14% nitrogen, now with about a third of it water-insoluble and none as nitrate, more potash (14% instead of 4%), less phosphate (4% instead of 6%), 2% magnesium instead of 3%, more sulfur, DTPA-chelated iron instead of EDTA, and manganese, zinc and copper from sulfates rather than chelates. Use the yearly amounts on this page, which follow UC’s nitrogen by tree age, even if you used different amounts for the 14-6-4.
How much should I give a mature citrus or avocado tree?
For a full-size tree in its fifth year or later, the University of California’s home-garden guidance (UC IPM) is 1 lb of actual nitrogen a year, which is 7.14 lb (3,240 g) of this 14-4-14. Split into 3 feedings, that is 2.38 lb (1,080 g) each; split into 2, it is 3.57 lb (1,620 g) each. Use less for dwarf and semi-dwarf trees; for citrus, UC Master Gardeners advise reducing the amount proportionately.
How much should I give a young tree or a tree in a pot?
UC IPM gives 0.25 lb of nitrogen a year in a tree’s second year, 0.5 lb in its third, and 0.75 lb in its fourth: 1.79 lb (810 g), 3.57 lb (1,620 g), and 5.36 lb (2,430 g) of this product a year, split into feedings. For first-year trees, UC gives a tablespoon of a nitrogen fertilizer rather than a weight, and for trees in containers it says only that they may need less, so this page gives no amount for either. Email us and we will help.
When should I feed citrus?
UC IPM advises nitrogen in January or February just before bloom, a second feeding in May, and perhaps a third in June. Avoid late-season feeding: UC IPM says it may affect fruit quality, delay fruit coloring, and make the rind rough.
How is feeding avocado different?
UC IPM gives avocados the same yearly nitrogen by age as citrus, but says to apply it in fall or winter. California’s avocado guideline (CDFA FREP) says zinc EDTA is not effective on avocados and uses zinc sulfate for zinc deficiency. This product’s zinc is zinc sulfate, but at 0.1% it is a routine trace, so don’t count on it to correct a deficiency.
Is it chloride-free?
No. Its sulfate of potash magnesia alone can carry up to 2.5% chloride, about 0.5% of the product, or about 16 g (0.6 oz) in a mature tree’s yearly amount, and its potassium sulfate can add a little more. Potassium chloride, by comparison, is about 47% chloride, and California’s avocado guideline (CDFA FREP) says it should be used with caution, especially on saline soils or where irrigation water is high in chloride. If a leaf analysis shows chloride toxicity, use a fertilizer that adds no chloride.
Can I dissolve it or run it through drip?
No. It is a granular blend, and about a third of its nitrogen is water-insoluble, so it does not dissolve completely and can clog emitters and injectors. Spread it on the soil around the tree and water it in. For drip, micro-sprinkler or foliar feeding, use a fully water-soluble fertilizer.
Will it fix yellow leaves on my tree?
That depends on the cause, so diagnose first. If it is iron chlorosis in alkaline soil, this product’s DTPA iron is a small routine amount, and University of Florida IFAS reports that only half of DTPA iron stays chelated at pH 7.5, so it will not correct it. UC IPM says zinc or iron deficiency can be corrected with a foliar spray of a chelated micronutrient solution as new growth emerges in spring. Chelated Iron DTPA is fully chelated at pH 6 and about half chelated at pH 7.5; above that, or in soil with free lime, an EDDHA iron chelate is the stable form.
Is it slow-release?
Partly: 4.9% of the product, about 35% of its nitrogen, is water-insoluble methylene urea, which soil microbes break down gradually, and Cornell University notes that little of that nitrogen is released while the soil is cooler than about 50°F. The rest of the nitrogen dissolves when you water it in. Feed on UC IPM’s schedule of 2 or 3 feedings a year either way.
Related guides & articles
For this product, use the amounts, calculator, and documents on this page. For help fitting it into your trees’ feeding, email questions@greenwaybiotech.com with the tree, its age, and any soil or leaf test.
Where the rates and statements on this page come from
The composition comes from Greenway’s product information. The publications below supply the nitrogen amounts, timing, placement, and plant-nutrition context noted beside each, without evaluating or endorsing this product.
CDFA Fertilizer Research and Education Program, California Crop Fertilization Guidelines: Avocado: orchard nitrogen rates and spring and summer timing, broadcasting granular fertilizer over the wetted area without incorporating it, nitrogen after frost or fire, zinc EDTA not being effective on avocados and zinc sulfate instead, potassium removal and response, potassium chloride cautions, phosphorus rarely being needed, and leaf sampling.
Not sure how much your tree needs, or which bag covers a feeding or the year? Email the tree, its age, how many you have, and any soil or leaf test to questions@greenwaybiotech.com, or call (562) 351-5168, Monday to Friday, 9 AM to 3 PM Pacific, and we will work it out with you.
Every order carries a 90-day satisfaction guarantee, and we pack and ship from Madera, California. You can also choose a bag size from the size selector at the top of this page.
Greenway Biotech, Inc. is a family-owned company that has blended and packaged specialty fertilizers in California since 1989, today from Madera.
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