How many spikes do I need for 13 recently planted trees with 1" to 2" trunks?

I would buy 2 packages, or 30 spikes. You will want to use 2 spikes per tree, 1 on each side about 30" from the trunk. We have a rectangular orchard with about 20 trees on 10 foot centers that we put in last year. We used a total of 40 spikes on the east and west sides of each tree. I would also recommend that you purchase a handheld auger (Yard Butler 30 inch Roto Digger) to drill into the ground about 18 inches before dropping in the spike. You want your roots to go down for their nutrients rather than across the surface, and burying the fertilizer stakes helps make that happen.These say right on the package do not use within 30 inches of tree trunk". Take that seriously. Buried or not, they will burn your roots if you stick them right next to the trunk.

I use this for my apple trees and yes I get bigger and better apples. This formula (9-12-12) is for fruit and citrus. Lower nitrogen for less greenery and higher phosphorous and potassium for improved fruit production. If you want to grow lemons on your "meyer lemon" then this is what you want.

Can this be used for potted citrus tree

I have used spikes in potted trees but I'm not so sure they don't burn the plants, personally I wouldn't do it again at least not those large spikes, I think you are safer with a time released granular product. Spikes are wonderful for in ground trees where you can place them at the edge of the drip line, but in my opinion they are too close to the trunk in a potted container and will burn the plant.

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Jobe's Organics Garden Fertilizer Spikes, Easy Plant Care Slow Release Fertilizer for Fruit and Citrus Plants and Trees, 15 Count

Product ID: 261968564

Details

Brand
Jobe's
Item form
Sticks
Item weight
12 Ounces
Liquid volume
15 Liters
Specific uses for product
Fruit Tree

🌱9-12-12 NPK nutrient formula

🕒Slow-release for up to 6 months

🧴15 pre-measured easy-insert spikes

€ 112.52

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Description

🌿 Feed your fruit trees like a pro—effortless growth, zero waste!

TWICE YEARLY BOOST - Designed for easy use in early spring and late fall to maximize yield and tree health.
TRUSTED BY THOUSANDS - 4.6-star rating from nearly 5,000 satisfied gardeners proves it’s the pro’s choice for lush, productive trees.
MESS FREE APPLICATION - No runoff, no smell, no hassle—just simple soil insertion for clean, efficient feeding.
LONG LASTING PERFORMANCE - Slow-release spikes provide continuous nourishment for up to 6 months, supporting seasonal growth cycles.
PRECISION NUTRIENT DELIVERY - Optimized 9-12-12 NPK formula fuels vibrant fruit & citrus growth without overfeeding.

Jobe's Organics Garden Fertilizer Spikes deliver a precise 9-12-12 nutrient blend in 15 slow-release spikes, designed specifically for fruit and citrus trees. Easy to apply with no mess or runoff, these spikes provide up to 6 months of continuous feeding, ensuring vibrant foliage and high yields. Trusted by thousands of gardeners, they’re the smart, clean solution for seasonal tree care.

Specifications

ASIN	B000A0YHHM
Application Method	Insert spikes into soil
Brand	Jobe's Organics
Brand Name	Jobe's Organics
Coverage	Medium
Customer Reviews	4.6 out of 5 stars 4,981 Reviews
Global Trade Identification Number	00073035016124, 30073035016125
Included Components	Lighting accessories, Home Lighting Products
Item Form	Sticks
Item Type Name	Fruit and Citrus
Item Weight	12 Ounces
Item form	Sticks
Item weight	12 Ounces
Liquid Volume	15 Liters
Liquid volume	15 Liters
Manufacturer	Jobe's
Mixing Ratio	9-12-12
Model Number	01612
Number of Items	1
Part Number	01662
Specific Uses For Product	Fruit Production, Tree Health
Specific uses for product	Fruit Production, Tree Health
Target Species	Fruit and Citrus
UPC	753956218417 716080044420 073035016124
Unit Count	15 Count

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€ 112.52

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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