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Granular and Controlled Release Fertilisers

Granular fertiliser is the set and forget feed: spread it, water it in, and the granules release nutrients over months instead of days. This Plant Doctor range covers mineral fertilisers, a neem-based granule that conditions the soil as it feeds, and a soluble iron for yellowing plants. The decision that matters is the analysis: nitrogen for leaves, potassium for flowers, fruit and roots.

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Choosing by what the plant needs

  • Leafy growth. Roots, Shoots and Leaves has an NPK of 16-2-10, with added zeolite to hold nutrients. It is weighted towards nitrogen for leaf growth and lawn colour and feeds for up to 3 months, which makes it the natural choice for hedges and screening plants.
  • Flowers and fruit. Flowers, Fruits and Roots is 8-2-20 plus trace elements. The 20% potassium supports flowering, fruiting and root strength, and a single application releases over 4 to 6 months.
  • Feeding and conditioning together. Neem Granules are a slow-release fertiliser and soil conditioner in a 1 to 2mm granule, made from neem oil, VolcaMin zeolite and a natural soil wetter. They feed for up to 3 months under lawns, garden beds and food crops.
  • Iron deficiency. Iron Chelate is a different kind of product: microgranules with 13% iron that dissolve completely in water, used as a foliar spray or a root zone treatment for fast correction of yellowing leaves.

Common questions

How do I apply granular fertiliser around new plants?

Scatter it evenly over the root zone, keep it off the stem and foliage, and water it in well. Along a new hedge, feed the whole strip, not just the base of each plant.

How often do I need to reapply?

Roots, Shoots and Leaves and Neem Granules feed for up to 3 months, so reapply once a season while plants are growing. Flowers, Fruits and Roots releases over 4 to 6 months.

Should I use liquids as well?

Granules make the base feed. A liquid fertiliser adds a fast response for pots, vegetables and plants recovering from pruning. Delivered Australia wide.

This range is part of our garden care collection. See also planting kits and bundles, seaweed and plant tonics and soil conditioners and wetting agents.