Rocks and Pebbles vs Mulch

22 October 2023 by
Harley Thompson

When it comes to landscaping, the choice between rocks and mulch can be a challenging one. Both have their unique advantages and applications. In this article, we'll delve into the similarities and differences between these two popular landscaping materials.

Similar Applications of Rock and Mulch

Both rocks and mulch serve as ground covers that can enhance the aesthetic appeal of a garden or landscape. They are used to:

  1. Retain Soil Moisture: Both materials help in retaining soil moisture, reducing the need for frequent watering.
  2. Weed Control: They act as barriers, preventing the growth and spread of unwanted weeds.
  3. Temperature Regulation: They help in regulating soil temperature, providing an optimal environment for good plant roots.
  4. Erosion Prevention: Both rocks and mulch can prevent soil erosion, especially in areas prone to heavy rains or winds.
  5. Aesthetic Appeal: They add a polished and well-manicured look to garden beds and landscapes.

Pros and Cons of Organic Mulch:

  • Better Growth: Mulch can significantly increase plant growth if applied correctly.¬†
  • Water Efficiency: Improves rainwater infiltration, reduces water evaporation, and saves on watering costs.
  • Nutrient Boost: As it decomposes, mulch releases essential nutrients into the soil.
  • Temperature Regulation: Provides insulation, keeping soil warm in winter and cool in summer.
  • Erosion Control: Prevents soil erosion and reduces soil compaction.
  • Frequent Replacement: Depending on the type, mulch may need replacement every 1-4 years.
  • Over-Mulching Risks: A layer thicker than needed¬†can hinder water movement and harm plant stems and trunks.
  • Timing Issues: Mulching too early or late in the season can affect plant growth and weed control. (the best time of year to mulch is in Autumn or Spring)
  • Potential for Weed Seeds:¬†¬†Might facilitate the germination of seeds that fall on the rich organic material.

Pros and Cons of Rocks in the Garden:

  • Low Maintenance: Rocks rarely need replacement.
  • Cost-Effective: In the long run, rocks can be more economical due to their longevity.
  • Fire-Resistant: Ideal for areas prone to bushfires.
  • Weed Control: Rocks can deter weed growth for longer durations.
  • Wind-Resistant: Heavy rocks are excellent for preventing soil erosion in windy areas.
  • Heat Retention: Rocks can raise soil temperature, stressing plants.
  • Maintenance: Debris needs to be cleaned from between the rocks.
  • Manual Removal: If you decide to remove or rearrange them, it can be labour intensive.
pebbles and rocks

Our Mulch:

At Daisy's Garden Supplies, we pride ourselves on offering the finest quality garden mulch in Melbourne, Geelong, and Victoria. When you think of top-tier mulch for gardens, think of us. Our diverse range caters to all your gardening needs:

Whether you're in search of mulch for your garden bed, vegetable patch, or any other space, we have the right product for you. All our mulch products are available in both loose and bagged forms. And if you're ever in doubt about the quantity, our handy mulch calculator ensures you get the perfect amount for your garden. 

Our Pebbles and Rocks:

Elevate your outdoor space with our premium selection of pebbles and rocks. At Daisy's Garden Supplies, we offer:

  • 40mm Slate: Charcoal coloured slate optimal for garden projects and weed prevention.
  • Cream Pebbles: Make a statement with their distinct creamy hue.
  • Coloured Pebbles: Available in sizes of 25-40MM and 50-150MM, screened for consistency.
  • White Ice: The go-to choice for those seeking pristine white pebbles and stones.
  • Authentic River Rocks: Sourced directly from our quarries, these bold rocks come in sizes upwards of 100mm.
  • Granite Marbles: Available in various sizes, they're perfect around natural water features.
  • Mudstones and Moss Rocks: ideal for crafting stunning rock walls and landscaping features.

Many of our products are available in both bulk and bagged forms, ensuring we cater to all your project needs. Dive into our extensive range and transform your outdoor space into a haven of natural beauty


While organic mulch offers several benefits to the soil and plants, rocks can be a more durable and low-maintenance option. The choice between the two often boils down to personal preference, the specific needs of the garden, and the desired aesthetic appeal.

For expert advice and a wide range of gardening supplies,  contact our expert team or check out our category pages for more info! We're here to help you make the best landscaping decisions for your space.

About the Authors

Harley Thompson

Harley is a second-generation journalist with a passion for gardening and a keen eye for detail.  Currently studying a double degree of Commerce and International relations at Monash University, Harley loves learning new things. He specialises in creating engaging content about garden advice, using experience in store, with our team and customers. His writing blends his academic knowledge with practical experience, offering informative and inspiring articles.    

Greg Fitzgerald

Greg Fitzgerald is a qualified horticulturalist with more than 30 years in the industry and 16 years at Daisy's Garden Supplies. He manages production and procurement for all our products, ensuring high-quality gardens and landscapes for our customers. His vast experience and qualification in horticulture make him a key asset to Daisy's. He offers valuable insights and a wealth of knowledge in terms of mulches, soils, pebbles and rocks, composts and many other products.