GreenWall - Vertical Gardening

GreenWall – Vertical Gardening

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The Holman GreenWall is an engineered platform that is designed to make hanging or vertical gardens easy to set up and maintain in an Australian yard, even if that is now an apartment balcony.

GreenWalls or living walls have been known since the Hanging Gardens of Babylon before the birth of Christ. The gardens of today tend to have small footprints but lots of walls. These offer many possibilities for home gardeners to bring living greenery back into our lives.

GreenWall will allow you to transform a wall into a lovely growing space. The system is simple to set up and most importantly incorporates a pre-installed irrigation system.

This vertical garden unit enables you to grow a herb or vegetable garden near your kitchen, to beautify indoor spaces and patio areas make a colourful and welcoming entry statement for your home.

Australia’s harsh summers mean that watering is the key to successfully growing vertical gardens. Holman has designed the GreenWall garden panel that makes a stable platform from which you can hang pots but it also has an integrated professional watering system that delivers controlled amounts of water into each individual pot, through the use of Pressure Compensating drippers.

How to Project


With summer approaching it is time to get your outdoor entertainment area ready. Our GreenWall range will bring an eye-catching design to your entertainment area along with the option of having an edible GreenWall right next to your BBQ. You can have fresh rosemary on your lamb chops or marjoram and oregano on your chicken. The possibilities are endless to spice up your next BBQ with a Holman GreenWall.

Our Holman GreenWall range is the new way to garden. Apartment balconies do not have sufficient space for a large garden and block sizes are getting smaller. Our solution to still incorporating a lush contemporary garden into your home is to grow on the wall!

With the Holman GreenWall range you no longer have to dig holes in the ground or lay brickwork around your garden bed. Our GreenWalls deliver all the benefits of normal gardening along with grand design freedom. The GreenWall range is also modular so you can expand horizontally or vertically to create your customised design.

Our GreenWall range offers different shapes, sizes and different pot configurations allowing you to grow herbs, vegetables or flowers. All of our GreenWall products are DIY friendly and can be completed within an hour depending on your design ideas. It is now easy to have a vibrant GreenWall in your home.

Discover the endless possibilities of Vertical Gardening with Holman GreenWall products that can be used to build an edible green wall, a feature wall using exotic native plants or both!



Product Code: GW1001
Panel dimensions: 600 × 360mm per panel
Pot dimensions: 115 × 140 × 110mm
Patent in Australia No. 2013201927


  • Fully Integrated watering system.
  • Connect multiple GreenWalls together then simply attach a hose to water all your pots simultaneously.
  • Uses 8 convenient pots & clever adjustable drippers.
  • Simply add your own plants or flowers to create beautiful displays.
  • Full colour retail packaging (barcoded) with comprehensive instructions.
  • Hang & Grow in 30 minutes.


Plants & Water

Selection of Plants

Apart from your imagination and knowledge of plants the only other restriction to what can be grown is the size of the pots. Trees by definition are not going to work. So what’s possible? First up many gardeners look to growing food. Most herbs can be cultivated, even some of the woody shrubs such as rosemary and lavender. Both of these plants need long hours of direct sunlight to succeed so an exposed west or north facing wall will be needed. Soft stemmed herbs such as parsley, mint, basil and coriander are very happy in small pots as long as their water needs are supplied. The idea of a wall of vegetables is very appealing.

This dream can be easily achieved with fast crops such as lettuce and the small oriental cabbages such as Pak Choi and Gai Lan. Not all lettuces produce heads such as the well known Iceberg. Non-hearting lettuces can be harvested ‘leaf by leaf’ and there are plenty of varieties from which to choose. Vegetables do best in high light situations. Flowering annuals can make a dramatic and welcoming splash of colour. Many of these are well suited to vertical gardens. Examples are petunia, portulaca, pansy, viola, sweet alyssum and lobelia. For shaded east or south facing walls look at plants like bedding begonia and impatiens. For a more permanent show where regular watering might be a problem, look to succulents. There are many families of succulent plants where form and foliage colour creates long term features. This is not to say that these plants don’t flower, they do and in many cases with great flair. ‘Flaming Katy’ or ‘florists kalanchoe’ is a terrific example putting up a dazzling flower show for three or four months at a time. Succulents are accustomed to getting by on little water and as a result have a tendency to rot if their roots are constantly wet. Use a cactus potting mix to fill the pots. In full sun you only need to water perhaps once every couple of weeks during summer so the plants experience dry soil in between drinks. Most succulents demand hot sunny locations to give their best show.

Some of the most spectacular vertical gardens are located indoors where there is more control over the environment, particularly when it comes to watering. Choosing a range of different foliage feature plants makes it possible to paint living pictures. As a general rule soft stem plants are amongst the most successful, so trailing pothos, philodendron and peperomia are good choices for vertical indoor gardens. In a similar vein patios and outdoor living areas can be decorated with living plants using the vertical format to create drama and effect. Tree growing orchids and bromeliads (air plants) are two groups of shade loving plants that are well suited to life in the air. It is possible to grow plants in both hydroponic and aquaponic systems using the Holman GreenWall. Fill the pots with expanded clay as the soil-less medium.

It is a good practice to drain the water into a reservoir or pond. With hydroponics you would add nutrient to the pond. In the case of aquaponics, fish would supply the nutrient through their excreta. In both systems use a small pond pump to lift the water up into the GreenWall units for re-circulation.

Potting Plants/ Re-Potting Plants

Potting Plants

One of the real breakthroughs in the Holman GreenWall system is that pots can be removed from the frame. This means that you can do your potting at a bench at a good working height. You can even establish the plants on the ground before positioning on the frame. Once growing on the module if something goes wrong, its easy to remove a single pot and sort the problem and even replant and then pop it back into its original position. Choose top quality potting mixes as these will not only drain well but also have good water holding characteristics. Also these mixes wet easily and moisture readily spreads through the whole of the root zone.

Red tick Australian Standards compliant potting mixes come with sufficient nutrients to keep plants growing for months after initial potting. The black tick standard mixes are stable but will require fertiliser at planting time for continued growth.

Re-Potting Plants

Most herbaceous or soft stemmed plants have a life span of one to two years and will need to be replaced when they start to look crook. These can be removed pot by pot from the panels. Don’t attempt to save the potting mix as it will have been exhausted by the growth of the previous plant. Empty the pot and use fresh potting mix. When planting up the pots fill the potting mix to the top of the lip as settling will bring it down as much as a centimetre once it is in the system. Additional pots will be available to buy separately and having a few spares can be a great idea. You could for an example have a back up crop growing off the wall so that the changeover is instantaneous with the display always looking good.

Feeding Requirements, Pest Control & Drainage Options

Feeding Requirements

By choosing the Red tick potting mixes you will ensure that anything that you plant will have sufficient food to get them through a couple of months of growth. Following on from this there are two ways to go. One is to use a controlled release fertiliser and the main advantage is that most of the nutrients will be taken up by the plants. Examples are Osmocote and Acticote. The other alternative is to use a liquid fertiliser. These by their nature are highly soluble and are taken up quickly. The trick is to apply a small amount so that you don’t find yourself staring at a stream of waste water coming out of the bottom of your GreenWall which contains most of the nutrients you applied at the top. Recommended liquid fertilisers include Powerfeed and Yates Uplift Organic Plant Starter and Root Booster.

Pest Control

Being suspended up off the ground your plants are out of reach of most pests. Snails may be able to get to them. There are low toxic pellets available that can be sprinkled over the soil to combat snails and their shell-less relative – slugs. Look for MultiGuard snail and slug pellets. Caterpillars are reasonably well adapted to attack a GreenWall vegetable or flower display as their eggs may have been deposited directly on the host plants by the flying adult butterfly. At the first sign of damage I would suggest spraying with Yates Success. This is a non toxic control for these big eaters.

Drainage Options

If you have combined a number of units to make a wall of flower or food you may end up with a number of drainage points. By using the drip tray supplied, each vertical line of modules will drain to the bottom unit. Instead of having a hose attached to each of the drainage units to take the waste water away, make up a drain line using 13 mm poly tube. In the kit you will find a screw on connector for the drain tray. This has a barbed end onto which you can push a short length of poly pipe. Buy poly “Tee’s” and “Elbow’s” to allow you to connect the drip tray together so that one poly pipe can draw off all the waste water from your wall. Overwatering can easily occur if you have a vertical installation of a number of modules. This can happen when water drips down through the layers, each of which has its own supply. The top layer receives the least amount where the bottom run in a series of 5 modules will receive as much as 10 times this amount.

Two solutions to this potential problem are to water so sparingly that water does not drain. The second solution is to attach the ‘clip drain’ to every unit in the vertical arrangement so water can only drip down one layer of the module at a time before the excess is drained away. If the GreenWall is in a position where rain can do the watering for you it won’t be such an issue as the top level will tend to get the most water and individual pots won’t be getting a combination of drip and irrigated water at the same time.


Water the plants as regularly as required. As a general rule the surface of the soil should dry out between drinks. Watering requirements will vary as determined by weather, plant and soil type. It is strongly recommended that an automatic electronic tap timer is used to regulate how much water is applied to the plants.

Checking your Watering System

It is critical to keep checking your watering system at regular intervals because the GreenWall has small pots they can dry out very quickly and this can lead to dead plants. The drippers need to be checked to ensure that an equal amount of water is flowing from each dripper. A filter is very important to ensure the water is clean and the drippers do not block up. Keep a close eye to ensure the filter is not blocked because this will restrict water flowing to all plants. Once your GreenWall is planted check that all the pots in the GreenWall are getting water.

It is worth investing in a electronic watering timer that can be set to water for small intervals. A Holman Misting timer is ideal for this. It is worth taking a little time to experiment and work out the optimum time to water your plants. This is likely to be no more than about 1 minute before water is flowing freely through the pot. It is best you stop watering just before the water flows freely. Too much water flowing through will leach nutrients and also waste water. If you use a Holman misting timer then you can programme the “Run” time to within 1 second and the “Off” time to say about 4 or 6 hours. Then the pots will be watered for a very small time on a regular basis. The amount of water your plants require will vary with the type of plant, the weather conditions and the type of potting mix you use. Use your finger to check the moisture by scratching the potting mix to a depth of 1cm.