Adding Nutrients to Tower Garden - How Often and How Much Should I Be Adding?

One of the most common questions we hear is: How much nutrient solution do I need for my Tower Garden?

Luckily, the answer is super simple—no horticulture degree required! The Tower Garden was designed for the Average Joe (or Jane!) to grow fresh, nutrient-packed food right at home. Whether you're a gardening newbie or a seasoned plant whisperer, let's break it down step by step.

1. Starting Fresh? Half-Strength is Best!
2. How Much and How Often Should You Add Nutrients?
3. Easy Ways to Measure Water in Your Tower Garden
4. Adjusting for Hot Weather
5. Quick Nutrient Guide: Your Cheat Sheet

Starting Fresh? Half-Strength is Best!

When you're just getting started with new seedlings, you'll want to use half-strength nutrients. That means:

✅ 200ml of Part A
✅ 200ml of Part B

This gives your young plants a gentle start, without overwhelming them. 

How Much and How Often Should You Add Nutrients?

Once your plants are established, you'll need to add nutrients EVERY time you add water. The golden rule:

👉 20ml of Part A + 20ml of Part B per gallon of water

But wait... how do you know how much water you're adding?

Easy Ways to Measure Water in Your Tower Garden

There are a few tricks to figure this out, even if you're not a "precise measurement" kind of person:

1️⃣ Eyeball It – If your reservoir looks half full (it holds 20 gallons total), just add 10 gallons worth of nutrients: 200ml of A + 200ml of B.

2️⃣ Make a Dipstick – A genius hack from Tower Gardeners Nancy & Jerry Kroupa!

What you need:

• A long wooden paint stick
• A permanent marker
• A ruler

How to do it:

• Mark 10 one-inch increments on the stick
• Label each mark with how many gallons it represents (2, 4, 6… up to 20)
• One inch = two gallons of water