UltraGROW Top Soil & Garden Soils

Choose a Top Soil or Garden Soil from our UltraGROW Range that is just right for your garden.

Here at Centenary Landscaping Supplies we really care about our soil and have worked hard to ensure our range is one of a kind. Right from the very beginning some 28 years ago, our focus and specialty was soil and specifically the development of a humble little soil known as Special Blend. At the time, Special Blend was so different to anything else available on the market and really became the basis on which all other soils in South East Queensland were modeled. Since then we have worked very hard with top soil manufacturers, soil scientists and industry professionals to develop our fantastic UltraGROW range.

The bottom line is, we care about soil, and that is a rare thing these days.

Choosing the type of quality top soil you are going to use in your garden is critical as it will provide the foundation of your landscape for many years to come. After spending hundreds of dollars on plants or turf you need to ensure that your investment is protected with the best possible start. At Centenary Landscaping Supplies you can choose from our new UltraGrow range or our more traditional waste manufactured soil blends. The UltraGrow range of Soil Blends are unique and uncompromised in quality and performance, so you can be confident that the soil you choose will actually work! Our traditional waste manufactured soil blends are more in tune to what you may have used in the past from our store or a competitor. 

UltraGrow Soil Range

Terry O’Shea (Managing Director) and John Daly, an industry expert in the field of soil science and agronomy have been working tirelessly to source quality waste free ingredients to formulate the best possible growing media that far exceed any Australian Standard currently in use in the landscaping industry. The resulting products presented here offer spectacular plant growth for you and your garden giving your plants the best possible start without compromise.

The UltraGROW Garden Soil range available exclusively at Centenary Landscaping Supplies, together comprise the largest and most comprehensive manufactured growing media (‘Soil’) range available in the retail market. Whether you are planting a new garden bed, filling some holes in the lawn or topping up an existing bed, we can help you select the top soil for the job.

Homeowners spend hundreds of dollars choosing the right plants or turf to suit your project and conditions, so it is important you choose a quality soil to help nurture and enrich your gardens to encourage healthy prolonged plant growth. It’s a one-off investment that can pay off for years to come.

Various plants have a distinct preference or particular requirement when it comes to soil suitability.

For this reason, it is important to select an appropriate soil, fit for use for optimum results in your circumstance. If in doubt, please seek the advice of a soil specialist at Centenary Landscaping Supplies. In some cases, it may be required to add specific fertilisers to the growing medium to achieve satisfactory results.

Traditionally Manufactured Soils

Traditionally manufactured soil constitutes the majority of growing media sold throughout South-East Queensland today. These soils use significant levels of composted recycled industrial and green waste materials as an ‘organic’ base. The composted components are then blended with different mineral elements such as top soil and sand to manufacture landscape soils designed with the intention of meeting the Australian Standard (AS-4419). 

The use of waste material is an environmentally sympathetic means to recycle otherwise unused products. However, often soils are manufactured to suit the waste that is available in abundance rather than what best suits a plants requirements. Centenary Landscaping Supplies acknowledges that green waste blended landscaping soils are a sustainable and effective method for handling and processing this waste.

Landscaping Soils

Platinum Garden Soil is a scientifically formulated growing media mixed from ideal ingredients. These ingredients combine to create an industry-leading product free from liquid and green waste. 

The mineral components form a diverse particle profile and complementary chemical spectrum. Made from natural soils and rock minerals, Platinum Garden Soil contains a high concentration of bio-inoculents designed to make the soil a living organism, primed for immediate plant establishment and superior growth with up to 9-months feeding.

  • Natural top soil
  • Fully composted bark fines,
  • Enriched compost
  • Coir fibre,
  • Granulated ash
  • Rock minerals
  • Palagonite
  • Seaweed concentrate
  • Blood and bone
  • Cation exchangers
  • Composted animal manure
  • Fish meal
  • Bio-char
  • Bio-inoculants
  • Clay breakers
  • Biogenic silica
  • Humic compounds
  • Worm casts
  • pH stabilisers
  • Long-term soil wetting agents.

Black Label is a bespoke mix prepared exclusively for Centenary Landscaping Supplies. A soil of this quality is not available anywhere else in the country.

It is scientifically blended from ideal components to create an industry leading growing media, free of liquid and green waste prevalent in most commercially availably soils. The mineral components form a diverse particle profile and complementary chemical spectrum, made from natural soils and Rock Minerals. Unlike green waste based organic soils, Black Label contains a high concentration of Microbial Inoculants which make the soil a living organism, primed for immediate plant establishment and growth.

The high quality, fully composted organics include:

  • Animal Manures,
  • Bio-char,
  • Sea-weed,
  • Blood and Bone,
  • Gypsum,
  • Wormcasts,
  • Fish Meal and Silica.

When you choose to use Black Label Garden Soil in your garden project you can be assured that your new garden, plants or vegetables will have the very best possible start in their new environment.

It’s ideal for all plant types and gardens including Veggie and Herb planters. It is a little heavier than most organic garden mixes and is licensed uniquely by CLS. You and your plants will love it.

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Ultima Garden Soil is an excellent new garden soil which is classified as a Natural Soil under AS 4419 as it has around 3% organic with a bulk density of 0.9. The new Ultima has a pH of around 7.1 and has a real soil feel and fragrance which will delight most gardeners and guarantees your success with lush growth.

Boost performance by adding Multi Pro Xtra or Hydro Terra Plex (9 or 24 month). Water holding capacity can also be improved by digging in HydroPlex saving you up to 50% on watering without water logging.

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A mix of strictly fine screened green waste organics composted over 12-14 weeks and blended with quality alluvial top soil. Classified as a Natural Soil under the Australian Standards with a low organic component, a bulk density of 0.9 and a pH of approximately 7.1.

Supreme Garden Soil is recommended for large residential applications as a horizon b layer. When using as a planting mix, we recommend the addition of quality fertilisers such as Multi-PRO Extra or Organic Xtra.

Supreme Garden Soil is a comparable product to what some competitors would call a ‘premium’ or top of the line garden soil and this is the best waste based manufactured soil available. For truly premium products which will produce amazing results, we recommend you choose from the UltraGrow Range.

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A mix of “dirt” and a light proportion of composted green waste making it perfect for filling larger beds with minimal slumpage. It must be fed with the appropriate fertiliser for healthy growth.

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A budget blend with a high compost component suitable for most large applications. Appropriate feeding is essential for good plant growth. If you’re planting out garden beds, it might be more appropriate to select a higher quality blend.

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Turf Underlay Soils

This a new garden and turf underlay natural soil with the addition of a small amount of organic with a pH around 7 which is neutral so good. It is excellent for all garden uses. It is a blackish natural soil with a nice clay content compared to most sandy soils on the market. It has become very popular due to its dark soil look and smell. Add Hydro Plex to increase water holding capacity and boost performance with Multi Pro Xtra or Hydro TerraPlex (9 or 24 month feeding respectively)

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Top Dressing Soils

This is a natural sandy loam processed through a fine 4mm screen and mixed with chicken manure. As a result, it is high in phosphorus making it ideal for turf and exotics. pH is around 7.2. As a sandy soil, it may crust so the application should be light with the grass leaves visible after a grass rake finish. It reduces the accumulation of dead grass clippings and stems, known as ‘thatch’. It helps to increase nutrient retention, improves drainage and increases disease and pest resistance. Water daily for the first week after top dressing which is normal practice. Apply at the rate of 10mm. to 15mm thick. (1m3 to 1.5m3 of top dressing covers 100m2).

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An excellent light composted organic top dressing option made up of screened organic compost and sand, recommended for light top dressing applications. A1 has a nice balance of nutrients and manure. It helps to increase nutrient retention, improves drainage and increases disease and pest resistance Apply at the rate of 10mm. to 15mm. thick. (1m3 to 1.5m3 of top dressing covers 100m2)

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Specialty Soil Mixes

Understanding Your Garden Soil, Top Soil and Plants:

What Do Plants Want?

There is probably a whole library full of books that tell us how to have a successful garden and how to make plants thrive but here we have tried to get to the basics of what you need to do to have a beautiful garden. What do plants need to thrive?

  • Sunlight
  • Water
  • Nutrients
  • Well Drained Soil

Remember, there is a huge range of plants available at nurseries and they will all require the above in differing proportions. Some plant species like shade, others prefer full sun; some may like drier conditions and some wet. So make sure when planning your garden that you discuss what your particular situation is with your local nurseryman so they can advise the best types of plants for your specific situation.

Once you have chosen the best plants for your design and location, it is time to turn your attention to the garden soil.

Natural Top Soil Compared with Manufactured Organic Soils

When starting a new garden or laying a new lawn, you are often confronted with one of two situations.

First, you might find that there is plenty of top soil in the garden but it’s been compacted over the years and has been depleted of most of its “goodness”. In this scenario, the existing garden soil needs to be rejuvenated by digging in some enriched compost. If you spread a layer of about 100mm across the garden and then dig it into the top 300mm of the existing garden soil, along with an organic fertilizer such as Organic Extra, the area will be revitalized, have improved drainage and increased nutrient levels. It should then be ready to accept the new plants.

The second scenario is that the natural ground is as hard as concrete; very heavy clay or shale rock, which is too inhospitable to work with. In this case you will need to import an organic manufactured top soil. At Centenary Landscaping Supplies we have a great range of organic soils that consist of a sandy loam top soil base mixed with various composted organics and fertilisers.

But why are organics used in these manufactured organic top soil mixes? Why don’t we just sell “straight” top soil? Well, we do but for plants to thrive, the growing environment needs to provide: water, nutrients and air to the root system. In a natural top soil without organics, the particles are very close together, which makes it hard for water to drain through the soils, and hard for air to penetrate down to the roots of the plant. Opening up the top soil by blending through organic material, we are providing space for the air and water to move around and a much better physical environment for your plants to grow.

The organics components also provide a source of food and in dry periods act as small storage reservoirs to help the plant survive. So remember, organics play a very important role in the success of the top soil we offer and from all the major manufactures in SE Qld.

The Three Golden Rules For Healthy Soil:

    1. ONLY USE FRESH NEW TOP SOIL – People often purchase and store their bulk soils for their gardens or lawns before they are ready to use it. This is the worst thing you can do as soil is a living and breathing organism. If you spread it in preparation for new turf but then do not lay that turf immediately, your soil will dry out and become hydrophobic (water repellent) and you may kill many of the microbial bacteria that are so important to the health of your garden. The same can happen if you stockpile it prior to placing into a garden bed. Garden soil needs to be alive with microbial bacteria.
    2. NEVER MECHANICALLY COMPACT – Top Soil is full of organic matter that breaks down over time and because of this, soils can be easily compacted, either by driving on it or driving over with compaction machinery. The soils structure needs to remain open so that air and water can freely pass through the top soil to the root zone. Along with nutrients, these are vital for good plant growth.
    3. REGULAR FEEDING – All our natural and organic top soils have a fixed amount of nutrients and trace elements necessary for good plant growth and plants will thrive initially. As plants use up these valuable nutrients, they will need to be replaced in the form of added fertilisers to maintain strong healthy plant growth. It is advisable to feed garden soil and lawns 3-4 times during the growing season, and at least once in winter when most plants are dormant.

How Much Do I Need?

This is a very important question and one which doesn’t necessarily have a simple answer. The first thing to establish is just how bad your natural ground is, that is, can it be turned at all and how hard is it?

If we assume that it’s almost bare rock, then for general planting of smallish shrubs approx. 300mm depth of top soil is recommended. The new plants will have enough “good” top soil to establish themselves before they have to send roots into the really hard surrounding natural ground.

Now, every situation is different and the 300mm is just a general guide for most situations so when planning your project, give us a call at the office or drop in and we are more than happy to help work out what is needed from your plans. A few rough drawings or sketches with measurements will help the decisions you make in discussions with us.

When working out the volume required, a good standard to remember is: 1 cubic metre covers 10 square metres at 100mm deep (or 4inches). So for the recommended depth of 300mm you will need three times that amount. So 3 x cubic metres of top soil will be required for each area of 10 square metres.

Remember the top soil you choose is there to support your expensive plants over many years. Get the volume right from the start and all you need to do in the future is plant, water, mulch and fertilize.

Caring for your UltraGROW Soil

Soil, like all other aspects of your garden is constantly changing and requires care and maintenance to ensure continued healthy plant growth. There are a number of things you can do to ensure your soil stays healthy, and a regular maintenance program is just as important as the initial soil selection.

The UltraGROW soil range comes jam-packed full of goodness, but remember, over time this goodness will slowly be used up by your plants. So it is important to keep up a regular fertilising regime.

One of the most important additions to remember when establishing a new garden bed with UltraGROW soil is the use of a quality mulch or bark.

So why is a mulch so important?

And what will it do to help my garden thrive? Here’s 4 Points worth noting…

Moisture control

This is by far the most important reason for using a mulch. Without a good layer of mulch (100mm or 4”), the sun and wind will cause the top 100mm of garden soil to dry out quickly putting your plants under extreme stress in a very short space of time. By adding mulch, the rate of evaporation is slowed dramatically and with water restrictions, any saving of water usage can only be beneficial not only to the environment but to your hip pocket.

Often we get complaints that plants are not growing well only to find when we visit that the garden has no mulch resulting in the garden soil drying out and even crusting, preventing water penetration.

Weed prevention

Having a physical barrier on top of the garden soil will inhibit weeds. Once a seed germinates and reaches the garden soil surface it needs sunlight to photosynthesize (produce food for growth). If a mulch is in place, just its physical presence will prevent most, if not all, potential weed problems thus allowing your plants to thrive without competition.

NB. Don’t use plastic under mulch, it prevents the passage of water and gases into the top soil and therefore this can hinder plant growth. We suggest you use a biodegradable mulch mat or newspaper.

Temperature moderation

This is another benefit of having this physical barrier. In our Queensland climate, top soil will absorb a considerable amount of heat, which in an un-mulched garden causes damage to sensitive plant roots near the soil surface. Also in those areas that have mild frosts, the mulch will again moderate the temperature making your garden soil a more “enjoyable” environment for your plants to grow!

Replacing organic matter

As the mulch decays, it helps maintain the soil’s open free draining structure. This can be seen if you walk through any rainforest or bushland where the ground underfoot is covered in decaying organic matter or nature’s mulch.

Creating a New Lawn with our UltraGrow Under Turf Soil

Many new lawns are laid on little or no top soil which will therefore require a lot of fertilisers and water in the future. To give your lawn the best possible start, lay a 150mm depth of top soil which will act as a water and nutrient reservoir for the turf and ultimately save you dollars. So, how much top soil do you need for 150mm depth? Use this simple formula to determine the volume of soil you need: AREA m2 x 0.15 = Vol m3.

Spring and early summer is an ideal time to top-dress your lawns which will not only level out any lumps and bumps but increase the water holding capacity in the lawns root zone and of course give it a boost of nutrients just when it needs it most.

Top dressing soils should only be spread in layers of 10mm or less.