Starter Kit – 6 Bottle Set (152 Ounce Total)

Starter Kit

Your shortcut to healthier, faster-growing plants.

Everything you need for a full growth cycle — no nutrient burn, no wasted product, no stress.

Trusted by thousands of gardeners. Backed by our 6-Month Satisfaction Guarantee.

Starter Kit (Set of 6 Nutrients)

  • Works for all plant types, indoors or out
  • Balanced liquid plant food formulas designed to work together
  • Noticeable growth in 7–10 days
$99.99 $170.77
Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)
  • Starter Kit – 6 Bottle Set (152 Ounce Total)

One box. Faster growth. Zero headaches..

The Starter Kit is designed for beginners, weekend gardeners, and plant lovers who just want great results — without the guesswork.

“Everything my plants needed, in one box.”

No Harsh Chemicals: Plant-safe formulas made with transparency and care.

Noticeable Results: Healthier leaves, stronger roots, and faster flowering.

Trusted by Thousands: One of our best-reviewed products, with thousands of 5-star ratings.

Versatile for Any Setup: Indoor pots, outdoor beds, raised planters, or hydroponic systems — it all works.

Easy to Use: Step-by-step feeding chart included. No specialist knowledge required.

Supports Full Growth Cycle: Nutrients that work together from seedling to harvest.

No Harsh Chemicals: Plant-safe formulas made with transparency and care.

Noticeable Results: Healthier leaves, stronger roots, and faster flowering.

Trusted by Thousands: One of our best-reviewed products, with thousands of 5-star ratings.

Versatile for Any Setup: Indoor pots, outdoor beds, raised planters, or hydroponic systems — it all works.

Easy to Use: Step-by-step feeding chart included. No specialist knowledge required.

Supports Full Growth Cycle: Nutrients that work together from seedling to harvest.
See How It Works

What’s inside?

Every grow needs its essentials. Think of this kit as your guide to growth: five concentrated, compatible formulas, each designed to play its part in every stage of plant growth..

The Humboldts Secret System Playbook:

  • Base A & B: The Foundation. A complete macronutrient profile with Nitrogen, Phosphorus, Potassium, Calcium, and Magnesium.
  • Golden Tree: The Catalyst. Improves yield quality and quantity with kelp, carbs, and trace minerals.
  • CalMag & Iron: The Strengthener. Micronutrients to address common deficiencies and strengthen plant structure.
  • Flower Stacker: The Multiplier. Enhances bud and bloom development for flowering plants.
  • Plant Enzymes: The Purifier. Breaks down dead root matter and boosts nutrient uptake.

Compatible with potting soil, hydroponic systems, aquaponics, coco coir, and other growing mediums.

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How to use the Starter Kit
(It’s simple, we promise).

1

Choose your plant stage (seedling, veg, flower)

2

Follow the included feed chart

3

Mix the recommended nutrients with water

4

Water as usual
See? No complicated math or trial-and-error experiments.

Increase yields by 568%.

No myths, just Humboldts Secret. See the proof on screen — in real-world tests, our plant nutrient system boosted yields by over 500%. Imagine what it could do for your garden.

Plants don’t wait — and neither should you.

 If your leaves are yellowing, staling, or wilting, they’re not going to fix themselves.

We got you. The Starter Kit gives you what you need to correct nutrient deficiencies, strengthen your soil, and stomp the guesswork before you lose another grow.

“I wish I’d used this months ago. I lost 50% of my garden last season. This year it’s exploding.”

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You could be seeing results like these.
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Customer Feedback

Your common questions, answered
What plants can I use the Starter Kit on?

This liquid nutrient kit works for vegetables, houseplants, herbs, fruit trees, ornamentals, flowers, and more. Whether you're growing indoors or outdoors, in soil, hydroponic systems, or aquaponics, the Starter Kit is compatible and effective.
Is this a complete fertilizer system for beginners?

Yes. It contains every essential macro and micronutrient you need across the full plant life cycle. It's ideal for new gardeners looking for simple, step-by-step feeding support.
Do I need to buy additional nutrients or supplements?

Not at all. This kit includes everything you need to feed your plants from seedling to harvest, including CalMag & Iron and a flowering booster.
How do I know how much to feed?

A full feeding schedule is included, showing exact quantities by plant stage and medium. No more guessing or Googling.
Do I need to use all of these nutrients?

You need at least Base A&B plus Golden Tree to have a successful and healthy growth. Our additional additives are for use at your discretion, or are needed for certain growing mediums and hydroponic systems. We encourage you to play around with what works for you!
How many gallons of solution does this make?

Our Starter Kit will make between 125 and 150 gallons of nutrient solution.
What if it doesn’t work for me?

We offer a 6-Month Satisfaction Guarantee. If your plants aren’t thriving, we’ll make it right.
Can I dilute multiple products into the same gallon of water?

Yes! All of our nutrients are meant to be used together, and can all be combined into the same gallon of water. Just remember to never combine nutrients together in their concentrated state to avoid nutrient lockout.

We’ve helped over one hundred thousand gardeners get better results, faster. From first-timers to lifelong gardeners, the Starter Kit is the easiest way to give your plants the nutrients they’ve been missing.

Try it risk-free with our 6-Month Satisfaction Guarantee.

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