---
product_id: 47409987
title: "Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System"
brand: "humboldts secret"
price: "1483 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Humboldts Secret"
url: https://www.desertcart.ro/products/47409987-humboldts-secret-starter-kit-pack-indoor-and-outdoor-plant-fertilizer
store_origin: RO
region: Romania
---

# Complete seed-to-harvest nutrition Works indoor/outdoor & all grow mediums Feeds up to 150 gal solution Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System

**Brand:** humboldts secret
**Price:** 1483 Lei
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock your garden’s secret weapon — grow smarter, not harder!

## Quick Answers

- **What is this?** Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System by humboldts secret
- **How much does it cost?** 1483 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/47409987-humboldts-secret-starter-kit-pack-indoor-and-outdoor-plant-fertilizer)

## Best For

- humboldts secret enthusiasts

## Why This Product

- Trusted humboldts secret brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sustainable Growth Support:** Supports slow growers and fast bloomers alike, promoting healthy roots, vibrant foliage, and robust flowers.
- • **All-in-One Growth Powerhouse:** Six premium formulas deliver balanced nutrients from seedling to bloom for unstoppable plant vitality.
- • **Effortless Multipurpose Feeding:** Mixes easily for hydroponics, soil, or coco coir—perfect for any indoor or outdoor setup.
- • **Professional-Grade, Garden-Ready:** Trusted by gardeners for over a decade, this kit elevates your green thumb with lab-tested reliability.
- • **Maximized Yield, Minimized Guesswork:** Clear directions and consistent quality mean you spend less time experimenting and more time harvesting.

## Overview

The Humboldts Secret Starter Kit Pack is a professional-grade, liquid nutrient system designed for complete plant care from seedling through harvest. Featuring six essential products—including Base A & B, CalMag & Iron, Golden Tree, Flower Stacker, and Plant Enzymes—this kit supports all grow mediums and environments. Trusted by gardeners for over 10 years, it simplifies feeding with clear instructions and delivers balanced nutrition to promote steady, vigorous growth indoors or outdoors.

## Description

Simple Feeding, Better Gardens Clear directions and consistent quality, no guesswork. Trusted by Gardeners Trusted by gardeners for over 10 years. Professional-grade plant nutrition, simple and consistent, from indoor plants to outdoor gardens. Trusted by Gardeners Trusted by gardeners for over 10 years. Professional-grade plant nutrition, simple and consistent, from indoor plants to outdoor gardens. Starter Kit & Essentials Visit the Store Starter Kit & Essentials Visit the Store Plant Food & Growth Visit the Store Plant Food & Growth Plant Care & Protection Visit the Store Plant Care & Protection Soil & Water Care Visit the Store Soil & Water Care Outdoor Essentials Visit the Store Outdoor Essentials How did we get our start? Humboldts Secret was created by gardeners, for gardeners, with a simple goal, make high-quality plant nutrients affordable and easy to use, so more people can grow with confidence. What makes our products unique? Humboldts Secret products are made with carefully selected ingredients and manufactured in our California facility, for consistent quality you can count on. What problem are we solving? We make plant nutrition simpler, clearer, and easier to follow, so gardeners can spend less time guessing and more time growing. How did we get our start? Humboldts Secret was created by gardeners, for gardeners, with a simple goal, make high-quality plant nutrients affordable and easy to use, so more people can grow with confidence. What makes our products unique? Humboldts Secret products are made with carefully selected ingredients and manufactured in our California facility, for consistent quality you can count on. What problem are we solving? We make plant nutrition simpler, clearer, and easier to follow, so gardeners can spend less time guessing and more time growing.

Review: Tree/Slow growing plants approved - Tree food approved. I was filled with a lot of fear because i work with plant soil and data and they d honestly dont share a ton of data to the public but i went for it and changed all nutrients besides a few base chemicals and for the most part they are killing it and not growing funny either and thats why people dont bonsai with chemical's and nutrients like this but I have been doing a lot of work and research with less of the fast flowering "short life" plants and have been giving more focus on long lasting slow growing plants and trees (bonsai) and what effects soil life and proper nutrient management has on them to find ways to save the soil strength and microbiome making stronger, healthier and higher yeilds. It is very difficult as a bonsai and plant guy is i know that they want to grow faster and bigger but typically its to much and the tree will look not as good and willl look good/big in the wrong way so to find a product not directed to only weed or flowers and can my plants can sustained all year use with proper measurements and nutrient management (depending on the plant) this is really one of the best set of mixes out there and i could show you some data of some of my plant growth within just the first 2 weeks of growth after i started my new nutrient cycle i couldnt belive some of my plants it seamed unbelievable but now they have slowed the growth (from bad growth to even growth they just needed time to get a little crazy. Things are much more prepositional now that i gave them some time. I like to give additional pure nutrients and not just premixs you mix haha but thats way to much for anyone to dedicate there time to unless they really love plants and thats why i love this kit for making gallons and all my soil based plants get some food once a week changing only by age or time of year and for most of my plants they all get this and its a simple way to get to know nutrients a little more plus this is high quality stuff, my plants love it and the early season data looked really good besides one juniper i think may have ODed and has been brown all season so be carful less is more at first, but its really simple and worth the price for short and long life plants also. I even use a diluted mix for my house plants not in the data but it works so good for more gallons of water worth of mix it takes lightwork of the process and i dont need a scales and it really is a pretty good multipurpose feed to take the average grower a step up a level. I would say Professional quality i would stick to making or buying what you have. This helps me manage the large number of plants that i need to feed during the summer with a little less effort so this works for me perfectly. Id like to see some microbes, soil building products or even pure nutrients or atleast try and or do a study....I can show you data....The future is here dont be late. I would make the full switch to Humboldt secrets but the lack of meaningful products is not enough for me to do that yet and thats alright because i think they are good and one of the best for price/quality products out there but not the best and lack of product really holds them back. but if plants are not youre life or way of life this is by far one of the best options. Even just Base A and B would do great if youre looking for just a taste
Review: Good products and reasonable prices - I’m very pleased with the results after growing with the products. Everything you need in one package and reasonably priced. Plant health and growth worked excellent producing nice crops. I didn’t write the review until I had used the product for two grows since I did know how well it would work. Quality products!

## Features

- Complete Nutrition From Seedling To Harvest: The Humboldts Secret starter kit includes six essential products to support plant health from start to finish: Base A & B (quart set), Flower Stacker (quart), CalMag & Iron (quart), Golden Tree (16 ounce), and Plant Enzymes (8 ounce). Whether you're just starting or refining your routine, this complete system helps streamline feeding and encourage vigorous, full-cycle plant development with ease.
- Balanced Feeding For Strong, Steady Growth: This concentrated liquid plant food mixes into 125 to 150 gallons of nutrient-rich solution for dependable plant care. Each formula delivers nitrogen, phosphorus, potassium, calcium, and magnesium to strengthen roots, support structure, and promote faster, more stable growth. Use across the full plant life cycle for consistent nutrition, noticeable results, and long-term health.
- Made For Any Grow Medium Or Setup: Designed for versatility, these hydroponic nutrients work across hydro systems, potting soil, and coco coir. The blends mix easily, apply cleanly, and perform reliably in any environment. Whether you're growing indoors or outdoors, in small containers or larger beds, this kit gives you control, flexibility, and measurable outcomes without complication.
- Effortless Feeding For Indoor Plant Success: Feed houseplants, herbs, leafy greens, and flowers with this simple and effective indoor plant food liquid. It supports root health, vibrant color, and leaf strength with minimal effort required. Ideal for use in grow tents, shelf gardens, or windowsill pots, this formula helps maintain steady indoor plant growth while saving time and simplifying daily care.
- Reliable Support Through Every Growth Phase: This plant fertilizer liquid fits seamlessly into your daily grow routine and supports plants during both vegetative and flowering stages. Whether you're tending a few potted plants or managing a larger setup, it delivers consistent nutrition from week to week and helps maintain long-term plant strength, balance, and development without added complexity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #21,847 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #772 in Garden Fertilizers |
| Brand | Humboldts Secret |
| Customer Reviews | 4.6 out of 5 stars 1,169 Reviews |
| Item Form | Liquid |
| Item Weight | 16 Ounces |
| Liquid Volume | 152 Fluid Ounces |
| Manufacturer | Humboldts Secret |
| Specific Uses For Product | Hydroponics,Potting |

## Product Details

- **Brand:** Humboldts Secret
- **Item Form:** Liquid
- **Item Weight:** 16 Ounces
- **Liquid Volume:** 152 Fluid Ounces
- **Specific Uses For Product:** Hydroponics,Potting

## Images

![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 1](https://m.media-amazon.com/images/I/71Txpg8QvwL.jpg)
![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 2](https://m.media-amazon.com/images/I/81-ArrtT+VL.jpg)
![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 3](https://m.media-amazon.com/images/I/81e87-lbwaL.jpg)
![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 4](https://m.media-amazon.com/images/I/91HyUyO3v6L.jpg)
![Humboldts Secret Starter Kit Pack | Indoor and Outdoor Plant Fertilizer and Hydroponic Nutrients | Base A & B, CalMag and Iron, Golden Tree, Flower Stacker, Plant Enzymes | Complete Garden System - Image 5](https://m.media-amazon.com/images/I/91WcsXlaz-L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Why is it not for sale in california ? 😭**
A: Because California claims everything causes cancer

**Q: Is it organic?**
A: No

**Q: Is this a petro chemical salt based solution**
A: No

**Q: Do you think that they’re adding the wrong amount of nutrients that’s why it’s killing some plants?**
A: depends on what medium you are using. Most people don't use washed coco. or use pre-amended soil and have no idea how much nutrients are already in it. or aren't watering enough or don't have ideal humidity so the plant drinks more and gets burned. if there isn't enough water it will become more concentrated. there are 100 reasons why growers make mistakes. Almost every single nutrient line could be amazing if used properly and at the right doses for what the plant genetics ask for. Most of the time it's grower's error. Better to go lighter on nutrients then too heavy. Plants will hurt less and bounce back faster with a deletion rather than abundance of nutrients.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tree/Slow growing plants approved
*by C***R on October 19, 2021*

Tree food approved. I was filled with a lot of fear because i work with plant soil and data and they d honestly dont share a ton of data to the public but i went for it and changed all nutrients besides a few base chemicals and for the most part they are killing it and not growing funny either and thats why people dont bonsai with chemical's and nutrients like this but I have been doing a lot of work and research with less of the fast flowering "short life" plants and have been giving more focus on long lasting slow growing plants and trees (bonsai) and what effects soil life and proper nutrient management has on them to find ways to save the soil strength and microbiome making stronger, healthier and higher yeilds. It is very difficult as a bonsai and plant guy is i know that they want to grow faster and bigger but typically its to much and the tree will look not as good and willl look good/big in the wrong way so to find a product not directed to only weed or flowers and can my plants can sustained all year use with proper measurements and nutrient management (depending on the plant) this is really one of the best set of mixes out there and i could show you some data of some of my plant growth within just the first 2 weeks of growth after i started my new nutrient cycle i couldnt belive some of my plants it seamed unbelievable but now they have slowed the growth (from bad growth to even growth they just needed time to get a little crazy. Things are much more prepositional now that i gave them some time. I like to give additional pure nutrients and not just premixs you mix haha but thats way to much for anyone to dedicate there time to unless they really love plants and thats why i love this kit for making gallons and all my soil based plants get some food once a week changing only by age or time of year and for most of my plants they all get this and its a simple way to get to know nutrients a little more plus this is high quality stuff, my plants love it and the early season data looked really good besides one juniper i think may have ODed and has been brown all season so be carful less is more at first, but its really simple and worth the price for short and long life plants also. I even use a diluted mix for my house plants not in the data but it works so good for more gallons of water worth of mix it takes lightwork of the process and i dont need a scales and it really is a pretty good multipurpose feed to take the average grower a step up a level. I would say Professional quality i would stick to making or buying what you have. This helps me manage the large number of plants that i need to feed during the summer with a little less effort so this works for me perfectly. Id like to see some microbes, soil building products or even pure nutrients or atleast try and or do a study....I can show you data....The future is here dont be late. I would make the full switch to Humboldt secrets but the lack of meaningful products is not enough for me to do that yet and thats alright because i think they are good and one of the best for price/quality products out there but not the best and lack of product really holds them back. but if plants are not youre life or way of life this is by far one of the best options. Even just Base A and B would do great if youre looking for just a taste

### ⭐⭐⭐⭐⭐ Good products and reasonable prices
*by B***N on July 2, 2025*

I’m very pleased with the results after growing with the products. Everything you need in one package and reasonably priced. Plant health and growth worked excellent producing nice crops. I didn’t write the review until I had used the product for two grows since I did know how well it would work. Quality products!

### ⭐⭐⭐⭐⭐ Love this project
*by R***T on February 3, 2026*

Great results

## Frequently Bought Together

- Humboldts Secret Starter Kit Pack – World's Best Indoor & Outdoor Plant Fertilizer and Nutrient System: Base A & B – Golden Tree – Flower Stacker – Plant Enzymes – CalMag & Iron
- Humboldts Secret Sweet & Sticky – Carbohydrate and Saccharide Energy Source – Enhance Aroma and Flavor of Plants – Potting Soil for Indoor Plants – Energy for Plants – 32 Ounces
- Humboldts Secret Tree Trunk - Silicate Additive - Advanced Nutrients - Helps Plants Flourish - Indoor Plant Food - Hydroponic Nutrients - Liquid Fertilizer (32 Ounce)

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---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-24*