---
product_id: 650132758
title: "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"
brand: "humboldts secret"
price: "$60.75"
currency: USD
in_stock: true
reviews_count: 5
url: https://www.desertcart.us/products/650132758-humboldts-secret-starter-kit-pack-worlds-best-indoor-and-outdoor
store_origin: US
region: United States of America
---

# Optimized for indoor & outdoor use Advanced nutrient system for lush growth Liquid formula for fast absorption 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

**Brand:** humboldts secret
**Price:** $60.75
**Availability:** ✅ In Stock

## Summary

> 🌱 Unlock your plants’ secret to legendary growth!

## Quick Answers

- **What is this?** 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 by humboldts secret
- **How much does it cost?** $60.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/650132758-humboldts-secret-starter-kit-pack-worlds-best-indoor-and-outdoor)

## 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

- • **Rapid Nutrient Absorption:** Liquid formula ensures your plants get nutrients fast, boosting growth and bloom cycles
- • **Trusted by 1,100+ Gardeners:** 4.6-star rating proves this kit delivers consistent, professional-grade results
- • **All-in-One Growth Powerhouse:** Combines Base A & B, Golden Tree, Flower Stacker, CalMag & Iron for unstoppable plant vitality
- • **Safe & Sustainable Gardening:** Formulated with care—just wear gloves and keep out of reach of kids and pets for worry-free use
- • **Versatile Indoor & Outdoor Use:** Engineered to thrive in any environment, from your urban balcony to backyard garden

## Overview

Humboldts Secret Starter Kit Pack is a premium liquid nutrient system designed for both indoor and outdoor plants. Featuring a comprehensive blend of Base A & B, Golden Tree, Flower Stacker, CalMag, and Iron, it promotes vigorous growth, enhanced flowering, and robust plant health. Trusted by over 1,100 users with a 4.6-star rating, this medium-coverage kit is perfect for professional and hobbyist gardeners seeking reliable, fast-absorbing plant nutrition.

## Description

Safety Warning Always wear gloves and protective clothing when handling. Keep out of reach of children and pets. Avoid contact with skin and eyes. In case of accidental contact, rinse immediately with plenty of water and seek medical advice. Do not ingest. Store in a cool, dry place away from heat sources and direct sunlight. Do not use near food or feed areas. Dispose of container in accordance with local regulations.

Review: Tree/Slow growing plants approved
Review: Good products and reasonable prices

## Features

- Harmful if swallowed.
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XH4533G |
| Brand | Humboldts Secret |
| Brand Name | Humboldts Secret |
| Coverage | Medium |
| Customer Reviews | 4.6 out of 5 stars 1,109 Reviews |
| Item Form | Liquid |
| Item Weight | 16 Ounces |
| Item form | Liquid |
| Item weight | 16 Ounces |
| Liquid Volume | 152 Fluid Ounces |
| Liquid volume | 152 Fluid Ounces |
| Manufacturer | Humboldts Secret |
| Model Number | 4336440967 |
| Specific Uses For Product | Plant Growth |
| Specific uses for product | Plant Growth |
| Target Species | Plants |
| UPC | 648260730512 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Humboldts Secret
- **Item form:** Liquid
- **Item weight:** 16 Ounces
- **Liquid volume:** 152 Fluid Ounces
- **Specific uses for product:** Plant Growth

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71Txpg8QvwL.jpg)

## 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 19 October 2021*



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



### ⭐⭐⭐⭐⭐ Works Great!
*by R***. on 14 December 2025*



## 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 United States of America*
*Store origin: US*
*Last updated: 2026-02-04*