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Avocado Fertilizer: Large & In-Ground Avocado Care Kit

$44.99
$40.99
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You grow an avocado for the fruit, for creamy avocados off your own tree, not for pale leaves, browning leaf tips, and a tree that grows slowly and sets little.

But once an avocado moves into a large container or goes into the ground, it feeds from far more soil and, in the ground, can grow into a big tree quickly, so the small kit that fed it before runs out fast. Avocados are hungry, especially for nitrogen, and underfeeding shows plainly: pale or yellowing leaves, weak growth, and poor fruit set.

What avocado growers want is simple. Feed the tree enough, at the right time, without overdoing it and burning the roots.

That is what this kit does. It carries enough season-long feeding, micronutrient support, and calcium for a large container avocado or a young to mid-size in-ground tree, released gently so it feeds steadily instead of in harsh spikes, applied as one simple routine instead of four.

Key features

Sized for large containers and young to smaller in-ground avocados. One kit feeds a 30-gallon container tree, two 15-gallon trees, or three 10-gallon trees for a full season.
Controlled-release NPK 18-6-12, 6 to 8 month release. A nitrogen-forward feed for the steady nitrogen avocados want, released gently to avoid root burn.
Micronutrient foliar or soil spray. Corrects the deficiencies that yellow avocado leaves, with iron, manganese, zinc, copper, and molybdenum.
Calcium, magnesium, and boron support. Improves fruit set and quality.
Pre-measured and simple. Complete avocado nutrition on a simple schedule, without the guesswork.

Ingredients

Everything in the kit, with a season application calendar:

  • Controlled-release NPK 18-6-12, 6 to 8 month release. 3 cups, net wt 24.6 oz (697.4 g), covers up to 15 sq ft. A nitrogen-forward, lower-phosphorus feed that releases over months.
  • Essential trace elements spray. 1 oz, net wt 1.2 oz (34 g), covers up to 312 sq ft. Iron, manganese, zinc, copper, and molybdenum for leaf color and vigor.
  • Calcium, magnesium, and boron nutrient spray. 1 oz, net wt 1.2 oz (34 g), covers up to 312 sq ft. Supports fruit set and quality.

How to use

Three products, one simple rhythm. The kit includes a container-size chart and a calendar.

  1. NPK 18-6-12 granule, feeds the roots. Spread the pre-measured pouch evenly over the soil around the tree, not touching the trunk, at the amount for your tree or container size on the included chart. Reapply every two months through the growing season, for example February, April, June, and August, and every two months year-round for indoor trees. Do not mix the granule with water.
  2. Essential trace elements, for plant health. Apply as a foliar spray or as a soil drench. Foliar: mix one pack with 64 oz of water and spray the leaves until run-off, every four to six weeks during active growth, more often if leaves yellow. Soil: mix one pack with 128 oz of water and drench the root zone, any time to correct yellowing.
  3. Calcium, magnesium, and boron spray, for fruit. Apply as a foliar spray or as a soil drench, every four to six weeks, before and at bloom and as fruit sets, in rotation with the trace spray. Foliar: mix one pack with 64 oz of water. Soil: mix one pack with 128 oz of water during fruit development.

Getting started: at first, apply the sprays every 5 to 7 days until the first packet is used, then settle into every four to six weeks, and reapply the granule every two months.

Why?

A big tree's nutrient demand is higher and more complex than nitrogen alone, and an in-ground or large-container avocado grows fast and feeds hard. This kit delivers the steady nitrogen avocados want plus the micronutrients and calcium they need, released gently so you feed the tree well without the salt buildup that harsh, heavy fertilizing can cause. The result is stronger growth, greener leaves, and better fruit.

Makes how much?

One kit feeds a single 30-gallon container tree, two 15-gallon trees, or three 10-gallon trees, and so on by total soil volume, or a young to mid-size in-ground avocado, for a full growing season. Feeding one small potted avocado in a 3-gallon pot or smaller? The container Avocado Kit is sized for that. Feeding a mature in-ground avocado, which can grow into a very large tree, requires more, so plan on more than one kit to cover the full root zone.
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Avocado tree care kit packaging with a visible brand logo on a white background

Avocado Fertilizer: Large & In-Ground Avocado Care Kit

$44.99
$40.99

Frequently Asked Questions

How much will one kit feed?

It scales by total soil volume: a single 30-gallon container tree, two 15-gallon trees, or three 10-gallon trees, and so on, or a young to mid-size in-ground avocado, for a full season. Follow the per-tree rate on the label.

What size and age of tree is this for?

Large container avocados and young to mid-size in-ground trees. For a single small potted avocado in a 3-gallon pot or smaller, the container Avocado Kit is the better fit. Mature avocados grow large, so an established in-ground tree needs more than one kit.

Can I grow avocado in the ground where I live?

In-ground avocado works in warm, mostly frost-free climates. In cooler areas, avocados are grown in large containers and protected in winter, and this kit is sized for those large pots as well as young in-ground trees.

Why are my avocado leaves yellowing or their tips turning brown?

Yellowing usually points to nitrogen or iron running low, and avocados are heavy nitrogen feeders. Browning leaf tips are different and often mean salt buildup from over-fertilizing or hard water, since avocados are sensitive to salts. This kit's controlled-release feed is gentler on that front, but water deeply now and then to flush salts and avoid heavy doses.

Is it safe for edible fruit?

Yes, when applied as directed on the label.

How is this different from the small kit?

Same feeding approach, scaled up. The small kit is sized for one avocado in a 3-gallon pot or under, while this kit covers a large container tree or a young to mid-size in-ground avocado. If you have a single small potted avocado, choose the container Avocado Kit instead.

All about feeding large and in-ground avocado trees

Feeding avocados in the ground

An in-ground avocado draws nutrients from a wide, shallow root system that spreads out under the canopy, so fertilizer works best broadcast evenly over that root zone rather than piled at the trunk. Avocados can grow into large trees quickly in the right climate, and their demand grows with them, which is why this kit is sized for young to mid-size in-ground trees while a mature, full-size avocado needs considerably more.

Avocados are heavy nitrogen feeders

Of the major nutrients, avocados lean hardest on nitrogen for their canopy and growth, which is why a nitrogen-forward feed like 18-6-12 suits them. Zinc is the micronutrient avocados most often run short on, showing up as small leaves and poor growth, and iron shortage shows as yellowing between the veins. Feeding steadily with the granule and topping up with the trace spray keeps both the base nutrition and the micronutrients in place.

Why avocado leaf tips brown, and how to avoid it

Browning or burnt leaf tips on avocado are usually not a lack of nutrition but the opposite, a buildup of salts from over-fertilizing or from watering with hard or softened water. Avocados have thin, sensitive roots that dislike high salt levels, so heavy, frequent doses of quick-release fertilizer can do more harm than good. A controlled-release feed that meters nutrients out slowly is gentler, and watering deeply on occasion helps flush accumulated salts below the root zone.

Pro tips for feeding a larger avocado

Broadcast the granule over the root zone, keeping it off the trunk.

Do not over-fertilize, since avocados are salt-sensitive and more is not better.

Water deeply now and then to flush salts, and mulch to keep the shallow roots cool and moist.

Watch for small or pale leaves as a sign of zinc or iron shortage, and lean on the trace spray to correct it.

How this kit simplifies larger-tree care

Instead of buying and measuring separate products, this kit combines steady controlled-release feeding, a micronutrient spray, and calcium into one pre-measured routine you can keep. For a salt-sensitive tree like avocado, the gentle, gradual release is part of the point, feeding the tree well without the spikes that stress the roots.

Container or in-ground: which kit do you need?

If you are feeding one avocado in a 3-gallon pot or smaller, the container Avocado Kit is sized for that. This kit steps up to large container trees and young to mid-size in-ground avocados. A mature, full-size in-ground tree needs more than one kit.

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