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Lemon Tree Fertilizer Kit: 3-in-1 Citrus Fertilizer for Potted Lemon Trees

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One simple kit for your potted lemon tree

You water your lemon tree. But are you feeding it? GrowScripts brings three complementary parts of lemon tree nutrition together in one easy-to-use kit.

Controlled-release NPK: supplies core plant nutrients over time.
Micronutrients: provide essential trace elements.
Calcium support: adds another important plant nutrient.

Made for container lemon trees

Ideal for potted lemon trees, including Meyer lemons, on patios and in suitable indoor growing conditions. Have a large container tree or an in-ground lemon tree? Choose the Large & In-Ground Lemon Tree Fertilizer Kit.

No complicated feeding routine

Pre-measured applications and clear directions help take the guesswork out of plant nutrition. Follow the package instructions for your tree and container size.

GrowScripts Lemon Tree Fertilizer Kit — $19.99.

Healthy citrus also depends on appropriate light, water, drainage and temperature. Fertilizer cannot correct every cause of yellow leaves or poor fruiting.

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Key features

Controlled-release NPK fertilizer: provides steady nutrition for 6–8 months.

Essential trace elements: supplies micronutrients that support healthy green foliage.

Calcium spray: provides supplemental calcium during flowering and fruit development.

Pre-measured application: no measuring or complicated fertilizer mixing.

Made for potted lemon trees: a complete 3-part feeding system for container-grown citrus.

Ingredients

Poly-coated NPK fertilizer (18-6-12): provides sustained nutrition for robust growth.
Trace nutrients: iron, manganese, zinc, and copper for vibrant foliage and strong roots.
Calcium nutrient spray: calcium, magnesium, and boron to support fruit development and healthy leaves.

How to use

For container lemon trees and young lemon trees:

Apply the fertilizer: Sprinkle the controlled-release fertilizer evenly around the tree base, then water in. It provides steady nutrition for approximately 6–8 months.
Feed the leaves: Apply the trace nutrient and calcium sprays to the foliage, or as a soil drench, following the included schedule.
Reapply on schedule: Follow the included seasonal feeding schedule. Applications are designed to overlap so your lemon tree has continuous nutrition throughout the growing season.

Why?

Lemon trees need more than a one-time dose of fertilizer. This 3-in-1 system combines controlled-release NPK fertilizer, essential trace elements, and supplemental calcium to make ongoing citrus nutrition simple.

No guesswork: the nutrients are already selected and pre-measured for you.
Know what to use and when: follow the included feeding schedule instead of figuring out multiple fertilizers on your own.
Built for container citrus: designed specifically for the nutritional needs of potted lemon trees.

Makes how much?

Provides a full season of care for one small potted lemon tree in a 3-gallon container or smaller. Application rates scale with pot size according to the included feeding schedule. Rate scales to pot size per the included schedule. Feeding a larger lemon or an in-ground tree? The Large & In-Ground Lemon Tree Kit covers a 30-gallon tree, two 15-gallon trees, or three 10-gallon trees.

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Frequently Asked Questions

Is this fertilizer kit made for Meyer lemon trees?

Yes. This kit was specifically designed for everbearing lemon trees, including Meyer lemons, which flower and produce fruit multiple times throughout the year. The nutrient program supports continuous growth, flowering, and fruit production in container-grown trees.

Can I use this on other citrus trees?

Absolutely. While it is optimized for everbearing lemon trees, the kit also works well on potted lime, orange, mandarin, kumquat, and other citrus varieties with similar nutritional needs.

How often should I fertilize my lemon tree?

The controlled-release fertilizer provides steady nutrition for approximately 6 to 8 months. For continuous feeding, applications are scheduled to overlap so your lemon tree doesn't run out of available nutrition between feedings. The trace nutrients and calcium spray are applied according to the included feeding schedule.

Will this help yellow leaves on my lemon tree?

It can help when yellowing is caused by a nutrient deficiency. Lemon tree leaves may turn yellow for several reasons, including insufficient nitrogen, magnesium, iron, or other nutrients, but watering, drainage, root stress, and environmental conditions can also cause yellowing. The kit supplies NPK fertilizer and essential micronutrients to support healthy green foliage when nutrition is the issue.

Why does this kit include three different products?

Healthy lemon trees need more than just NPK fertilizer. The GrowScripts system combines a controlled-release fertilizer, a trace nutrient blend, and a calcium foliar spray to provide complete nutrition that supports healthy roots, dark green leaves, abundant blooms, and high-quality fruit.

What is the best fertilizer for a potted lemon tree?

Potted lemon trees benefit from a citrus fertilizer that provides steady NPK nutrition along with essential micronutrients. Because nutrients in containers are limited and can be lost through regular watering, a consistent feeding program is important. The GrowScripts Lemon Tree Fertilizer Kit combines controlled-release 18-6-12 fertilizer, trace elements, and supplemental calcium in one feeding system designed for container-grown lemon trees.

5 stars: 1 (25%)
4 stars: 2 (50%)
3 stars: 1 (25%)
2 stars: 0 (0%)
1 star: 0 (0%)

The kit seems to be working, but to be honest the instructions for when to use each of the three elements wasn't clear. I used the fertilizer first, waited a few weeks and then tried one of the liquids, then a few weeks later, tried the other one. Better instructions would be a plus.

Neat little kit for my lemon tree, but this product is only good for about 3 months. Then you'll have to buy more. Directions inside are very poor. Small packets of liquid inside are not labeled. ??? I hope to see the leaves on my tree green up again, but hasn't happened yet. It's been about 2 weeks since I applied.

Very easy to use and apply to soil. Pre-measured packets are ideal for quick timely application on meyer lemon tree!

I thought I ordered the little green ball fertilizer for my lemon trees, but ended up with those crappy little packets that you expected to dilute and spray. I hate those! I emailed them asking if I could return it and exchange it for the little green balls, and nobody even bothered answering me. So it may work well, but I find it very inconvenient to deal with the little packages and diluting them and spraying them. Too much work for me and too messy.

The best lemon tree fertilizer for container-grown trees

Most lemon tree fertilizers are made for in-ground trees, not for the potted Meyer lemon on your patio. GrowScripts is different. Our kit is specifically formulated and pre-measured for container lemon trees, so you know what to use, how much to apply, and when to use it.

What's inside the kit

Unlike single-product fertilizers that leave gaps in nutrition, the GrowScripts kit combines three targeted products that work together:

Controlled-release NPK fertilizer (18-6-12): feeds your tree for 6 to 8 months with a steady release of nutrients.
Trace nutrient blend: supplies iron, manganese, zinc, and copper.
Calcium foliar spray: calcium, magnesium, and boron, applied directly to leaves for fast absorption.

Everything is pre-measured for your pot size. Just sprinkle, spray, and grow.

Why container lemon trees need a different fertilizer

Container-grown lemon trees face challenges that in-ground trees do not:

Nutrients leach out every time you water
Limited root space
No surrounding soil ecosystem
Higher risk of nutrient deficiencies

Signs your lemon tree may need fertilizer

Yellowing or pale leaves
Slow or weak new growth
Reduced flowering or fruit production
Poor overall vigor

These symptoms don't always mean your lemon tree needs fertilizer. Yellow leaves and slow growth can also be caused by watering, drainage, root problems, temperature, or other growing conditions. If nutrition is the issue, providing balanced NPK fertilizer along with essential micronutrients can help support healthy growth and foliage.

Lemon tree fertilizer schedule

Spring: Apply controlled-release fertilizer and follow the included trace nutrient and calcium schedule.

Summer: Continue feeding according to the included schedule. Controlled-release applications can overlap to maintain consistent nutrition.

Fall: Continue feeding container lemon trees that are actively growing. Adjust as temperatures cool.

Winter: Indoor or warm-climate container trees can continue to be fed. Reduce or pause feeding when cold or frost is a concern to avoid encouraging tender new growth.

Container lemon trees can grow and be fed year-round when conditions support active growth. Adjust feeding based on your tree's growing conditions rather than the calendar alone.

Pro tips for container lemon trees

Water deeply but less frequently
Use pots with drainage holes
Provide 6 to 8 hours of sunlight
Adjust feeding during cold weather or periods of slower growth.

Simple lemon tree feeding, without the guesswork

The GrowScripts Lemon Tree Fertilizer Kit gives you the nutrients, pre-measured applications, and feeding schedule you need to care for a potted lemon tree with confidence. Know what to use, how much to apply, and when to use it.

Feeding a larger lemon or an in-ground citrus tree? Step up to the Large & In-Ground Lemon Tree Fertilizer Kit, sized for a 30-gallon tree, two 15s, or three 10s.

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