Skip to Content

Prices may vary by store. Select your store above to confirm pricing.

  1. All products
  2. Garden & Outdoor Essentials
  3. Mulch
  4. 20MM PINE BARK
  5. Mulch
Select Store: T_Ashwood Select Store
Select Store: T_Ashwood Select Store

20MM PINE BARK

(0 review)

For larger garden beds and open areas that need to stand up to the elements, our bulk 20mm Pine Bark offers a heavier, more wind-resistant nugget than our finer grades. Ranging from golden to dark chocolate brown, it's a favourite for commercial landscapes, industrial sites, and private gardens alike where durability matters as much as looks. Available in bags or by the cubic metre for pickup and delivery across Melbourne, Geelong, Mornington Peninsular and the Surf Coast.

$ 113.00 $ 113.00

Add to cart
Contact Us

20mm Pine Bark FAQs

Here are some common questions about our 20mm Pine Bark.

20mm Pine Bark suits larger garden beds, commercial landscapes, and open or exposed areas where a heavier, more durable ground cover is needed.

Yes. The larger, heavier nuggets are less likely to wash or blow away on slopes or in exposed sites compared to the finer 10mm grade. For sheltered garden beds or a neater finish, 10mm is usually the better fit.

Pine bark isn't a food source for termites the way structural timber is, but keeping any organic mulch clear of building foundations and timber structures (aim for at least 50mm) is good practice to avoid creating a moist, sheltered environment near your home.

Yes, 20mm Pine Bark is untreated and undyed, with no added chemicals. It's still sensible to discourage pets from chewing large amounts of any mulch, but the bark itself isn't toxic.

Use our Volume Calculator to work out how many cubic metres you'll need based on your bed's length, width, and desired depth. We recommend laying pine bark at a depth of 50-100mm.

  • Wind & Weather Resistance: Larger, heavier nuggets stay put better than fine mulches in exposed or sloped sites.
  • Weed Control: A thick layer suppresses weed growth over open areas.
  • Longevity: Coarser bark breaks down slower again than the 10mm grade, ideal for low-maintenance commercial or large area jobs.
  • Soil Enrichment: As the mulch slowly decomposes, it adds organic matter to the soil, improving soil structure, drainage, and long-term fertility.
  • Natural Look: Undyed, with natural colour variation from golden to dark chocolate
  • Moisture Retention: Helps reduce evaporation from the soil surface.

Product Disclaimer

Please note: While we aim for consistency, slight colour variations from online images may occur due to the natural and recycled materials used. For the most accurate colour representation, we recommend visiting one of our stores before placing a large order.

  1. Prepare the area: Clear existing weeds and debris. Lay a weed mat first for maximum suppression.
  2. Apply at the right depth: Spread to 50–100 mm. Too thin and weeds can break through; too thick restricts water penetration.
  3. Keep clear of plant stems: Leave a 50 mm gap between mulch and plant stems or tree trunks to prevent moisture build up.
  4. Water it in. Give the area a good drink after mulching to settle the layer and start pushing moisture down to the roots.
  • Natural Weathering: Over time and UV exposure, the surface layer will gradually silver slightly, a normal part of how bark ages outdoors.
  • Keeping it Looking Fresh: A light rake or turn each season lifts the surface layer and brings the richer underlying colour back to the top.
  • Even Coverage: Topping up thin or patchy spots as needed helps keep the bed looking consistent and full.
  • Top Ups: To keep your mulched gardens pristine, Re-mulching is recommended yearly to every three years. Remember that the thicker mulch is laid, the longer it lasts. Keep in mind that mulch laid over 100mm can reduce water entering the roots. 
  • Wear gloves when handling the mulch.
  • Avoid contact with eyes and skin, and prevent inhalation of dust and vapours.
  • Store away from open flames.
  • Keep dry before and after installation.


This is a test database. See the documentation for more information.
test