FlowGrow

FlowGrow 12 Layer Hydroponic Tower

SKU:FG-TWR12-SK

$488.00 NZD

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Shipping calculated at checkout.

Choose your setup Tower Only Tower + Starter Kit

Tower Only includes the tower setup. Starter Kit adds the growing essentials and saves $10.

Growing your own food has a way of becoming addictive. One variety turns into three. A few herbs become fresh salads, leafy greens and seasonal favourites.

The FlowGrow 12 Layer Tower is our most productive hydroponic garden, growing up to 36 plants while using little more space than a small side table. Perfect for enthusiastic home growers, larger households and anyone wanting the freedom to grow more of what they love.

Designed for kitchens, patios, balconies and sheltered outdoor spaces, it delivers maximum growing capacity without demanding more room.

Whether you’re harvesting for the family, experimenting with new varieties or simply enjoying the satisfaction of growing more, the recirculating system makes it easy to keep fresh food close at hand.

Assembly takes around 20 minutes, and FlowGrow’s setup guides, growing advice and New Zealand support are there whenever you need them.

Free New Zealand shipping is included on all FlowGrow towers and tower starter bundles.

What's Included

• FlowGrow 12 Layer Tower with 36 planting sites

• Modular stackable tower sections

• 20 L reservoir base and lid

• Internal recirculating water system

• Low-voltage submersible pump

• Timer and 12V power adaptor

• Water level gauge and nutrient funnel

• Wheels (set of 4)

• Plant support sponges

• Quick assembly guide

Everything needed to assemble and start your tower is included.

From box to growing

Up and growing in around 20 minutes. No tools required.

Tool-free assembly
Pump and timer included, ready to connect
Add water and nutrients to get started
Top up water as plants grow
Refresh reservoir water every 2–3 weeks
Suitable for Indoor or sheltered outdoor use.

For step-by-step setup, visit the FlowGrow Setup Guide

Need more nutrients? Shop nutrients

Specs & sizing

Footprint
40.5 cm × 40.5 cm

Height
136 cm

Planting Sites
36

Reservoir Capacity
20 L

Material
Food-grade polypropylene (PP)

Pump
Low-voltage DC submersible pump

Power Supply
12V adaptor included

Timer
Inline loop timer (DC 12–24V, ≤3A)

Placement
Suitable for bright indoor spaces or sheltered outdoor areas

Power Consumption
Uses very little power, similar to a small household light bulb

Shipping & Delivery

Free NZ shipping on all FlowGrow towers and tower starter bundles.

Standard NZ shipping applies to standalone Starter Kits, nutrients, accessories, growing essentials, and replacement parts.

Orders are shipped from New Zealand. Standard delivery is usually 3–5 business days. Tracking details are provided once your order is on its way.

Rural delivery and busy courier periods may take longer.

Questions about your order? Contact us

View full details

Close-up of fresh leafy greens being picked from a FlowGrow hydroponic tower.

The freedom to grow more

There’s something rewarding about always having something ready to harvest. Fresh herbs for dinner, leafy greens for lunch, and room to try something new whenever inspiration strikes.

The FlowGrow 12 Layer Tower gives you the freedom to grow more of what you love while keeping the same compact footprint that makes every FlowGrow tower easy to live with.

Whether you’re harvesting for the family, experimenting with new varieties or simply enjoying the rhythm of growing your own food, there’s always something waiting to be picked.

Diagram of a FlowGrow Hydroponic system with labelled components on a white background

How FlowGrow works

FlowGrow is a recirculating vertical hydroponic tower. Nutrient-rich water is pumped to the top of the tower, flows gently past the roots, then returns to the reservoir to be reused.

1. Add water + nutrients
Fill the reservoir and mix in your FlowGrow nutrients.

2. Water flows from the top
The pump lifts nutrient-rich water through the internal hose to the flow cap at the top.

3. Roots absorb what they need
Water gently flows down through the tower while plant roots absorb moisture, nutrients, and oxygen.

4. Water returns to the base
Unused water returns to the reservoir to be reused again through the system.

QUESTIONS WE HEAR MOST OFTEN.

Good to know

Is FlowGrow aeroponic or NFT?

FlowGrow is best described as a recirculating vertical hydroponic system.

It is not a true aeroponic system, because the roots are not suspended and misted, and it is not a traditional NFT (Nutrient Film Technique) system, where water flows through horizontal channels.

Instead, a pump lifts nutrient-rich water to the Flow Cap at the top of the tower. The water flows gently past the plant roots before returning to the reservoir to be reused, creating an efficient recirculating growing system.

How often does the pump run?

For everyday growing, set the timer to run for 1 minute on and 30 minutes off. During particularly hot weather, this can be increased to 5 minutes on and 30 minutes off if your plants need additional moisture.

How much water should I add?

The reservoir holds up to 20 litres, but we recommend filling it with around 15 litres. This provides plenty of water for the system while leaving room for the returning flow and making the reservoir easier to maintain.

Does the tower need a grow light?

Not always. FlowGrow grows best in a bright location. A grow light is only recommended when there isn't enough natural light available, such as indoors away from a sunny window. Towers placed in a bright indoor position or a sheltered outdoor location may not need additional lighting.

How often should I refresh the reservoir?

Top up the water as your plants use it, and replace the nutrient solution approximately every 2–3 weeks. This helps maintain a healthy balance of water and nutrients for consistent growth.

Can the timer be left in the rain?

No. The timer and electrical connections should always be kept dry and protected from the weather. If your tower is outdoors, place the timer and power connections under cover or inside a suitable weather-protected enclosure.

Can I grow fruiting plants like tomatoes?

Absolutely. The 12 Layer Tower gives you the freedom to grow a wider range of herbs, leafy greens and fruiting plants at the same time. When plants begin flowering, switch to FlowGrow Bloom Nutrients to support healthy flowers and fruit. Some larger plants may also benefit from additional support as they grow.

Designed to fit everyday life

Easy to get started
Set it up in under 20 minutes and begin growing from day one.
More growing space in one footprint
Grow a wider mix of herbs, leafy greens, and compact vegetables
Reuses water naturally
The recirculating system continually cycles water through the tower instead of draining it away.
Fits everyday spaces
Designed to suit bright indoor spaces and covered outdoor areas around the home.

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What can you grow?

FlowGrow works well for herbs, leafy greens, strawberries, and other compact plants suited to home hydroponic growing.

Leafy greens
Lettuce, Mesclun mix, spinach, rocket
Herbs
Basil, mint, parsley, coriander, thyme, chives
Compact veg
Cherry tomatoes, chillies, small peppers
Other favourites
Strawberries and edible flowers

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FlowGrow 12 Layer Hydroponic Tower with Starter Kit including Grow nutrients, rockwool cubes, net pots, pH test strips and seed starting essentials.

Start Growing Straight Away

Everything you need to get started from day one. Add the FlowGrow Starter Kit and have everything you need from day one, without guessing what to buy separately.

Add the Starter Kit for $39 when purchased with your tower.

(Save $10 compared with purchasing separately)

Starter Kit includes:

Germination tray
Rockwool cubes 50
Net pots matched to FlowGrow towers
Grow nutrients (Part A & B – 200 ml each)
Measuring cup
pH test strips
FlowGrow Easy Start Guide

Add Starter Kit

Compare Tower Sizes

Each FlowGrow tower works the same way. Choose the size that best fits your space, your household and how much you want to grow.

Best for getting started

6 Layer Tower

18 plant sites. A compact setup for smaller spaces, first towers and everyday growing.

View 6 Layer Tower

Balanced growing space

9 Layer Tower

27 plant sites. More room to grow while keeping the same compact footprint.

View 9 Layer Tower

You’re viewing this tower

12 Layer Tower

36 plant sites. The largest FlowGrow tower for households wanting more room to grow.

Current Tower

Frequently Asked Questions

A few helpful things to know

Is this a good option if I’ve never grown anything before?

Yes. FlowGrow is designed to feel approachable for first-time growers while still supporting long-term growing as your confidence builds.

Many people start with herbs and leafy greens before experimenting with other plants over time.

Where should I place it?

FlowGrow grows best in a bright indoor position or sheltered outdoor area with good natural light.

A sunny window, covered patio, deck, or balcony can all work well depending on conditions.

Can I use it indoors?

Yes, provided the tower receives enough natural sunlight. Bright indoor spaces tend to work best for herbs and leafy greens.

If natural light is limited, compatible grow lights may also help support growth.

How noisy is the pump?

The pump runs quietly and is designed for home environments. Most people notice only the gentle sound of flowing water, similar to a small water feature.

How much power does the system use?

The tower uses a small low-voltage pump connected to a 12V power adaptor. Power consumption is very low — typically less than a small household light bulb.

What can I grow in it?

Leafy greens, herbs, strawberries, and many compact vegetables all grow well in FlowGrow when light conditions are suitable.

Can I extend my tower later?

Yes. FlowGrow extension sections are available separately if you’d like to expand your growing space over time.

Continue your growing journey

Keep Growing
Top up nutrients, growing media, and essentials to keep your tower ready...

Keep Growing
Helpful Growing Extras
pH strips, EC meters, and measuring tools for growers who want a...

Helpful Growing Extras
Growing Essentials
Seed-starting media, net pots, nutrients, and measuring tools. Everything you need to...

Growing Essentials

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FlowGrow 12 Layer Hydroponic Tower