Scotts Osmocote® Bonsai Mix

Scotts Osmocote® Bonsai Mix

Main product features
Contains 6 months feed
Contains 6 months feed
Encourages stronger root development
Encourages stronger root development
Plus trace elements
Plus trace elements
WaterSmart Technology
WaterSmart Technology

unique, premium quality mix specially formulated for growing bonsai of all types and of all ages - from seedlings to specimens decades old. It includes Scotts Osmocote® for 6-month feeding

When to use


  • Bonsai Mix contains coarse grit in addition to the usual composted pine bark, to help it retain moisture and nutrients for longer in the shallow bowls and pots used for traditional bonsai
  • Wetting agent assists moisture to soak into the mix and helps plant roots take up nutrients
  • Certified to meet the Australian Standard for Premium potting mixes



  • All traditional bonsai, including evergreen or deciduous, flowering or foliage trees and shrubs
  • Starting new bonsai from seedlings or rooted cuttings
  • The controlled release of nutrients from the included Scotts Osmocote® means it will not burn soft leaves or tender young roots



Don't use in hydroponic growing systems

Don't use on lawns - use only specifically named lawn topdress soils on grassed areas


  1. Use Bonsai Mix straight from the bag - don't mix it with other materials. Close the bag tightly after use
  2. Choose a clean container with large drainage holes that is in proportion to the size of your bonsai plant and its root system. The existing pot may be re-used after thorough washing
  3. Position anchor wires through the drainage holes, then cover the base of the container with mesh (to prevent potting mix washing out) and a layer of grit or coarse washed river sand to aid drainage
  4. Water the plant thoroughly, then carefully remove it from its existing pot
  5. Gently tease the old mix from the outside of the rootball, carefully remove any damaged or twisted roots and prune back elongated roots
  6. Add Bonsai mix to the pot to one third its height
  7. Place the plant in the pot then add more mix to the correct height - the surface of the mix should slope up from just below the rim of the container to the base of the bonsai trunk/stem. The plant should look like it is in a miniature landscape
  8. Tap the new pot or container gently on the bench to help the new mix settle in and around the roots. Firm lightly
  9. Initial watering of the plant after potting is essential to ensure the mix is thoroughly wet, then allow it to drain freely
  10. Place the pot or container in a sheltered position out of the direct sun for a few days to allow the plant to settle and acclimatise before moving back to its permanent home

For a complete guide on how to use Scotts Osmocote® Professional Bonsai Mix, watch the video on this page and always check the packaging



  • Potting mixes can be used at any time of the year
  • Repotting established plants is best done either in Spring or Autumn - avoid Winter or Summer as the extremes of temperature may stress plants
  • Flowering plants should be repotted after they have flowered - enjoy the blooms first!



CAUTION: This product may cause staining of hard surfaces if wet. Avoid contact with hard surfaces and if contact does occur, sweep off immediately

When using potting mixes, we recommend the use of garden gloves to protect your hands

SAFETY FIRST: Read the instructions on the product packaging before use and take particular note of any warnings or cautions on the label 

See the Safety Data Sheet for this product



The addition of coarse grit assists in holding the shallow roots of a bonsai firmly in position while also increasing moisture retention in the mix

The professional-grade wetting agent included ensures water soaks in readily and aids roots in absorbing nutrients

Health and Safety

Always read the pack label and product instructions carefully before use. For further information relating to product safety please review the product data safety sheet link below.

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