Lightly rough up the soil surface and apply the contents of each bag evenly over the designated area. Use a rake or similar tool to gently incorporate the fertiliser into the top layer of soil.
When applying around existing plants, take care not to disturb surface roots. If disturbing the soil is impractical, the fertiliser may be applied to the surface and then covered with compost or mulch instead.
Water the soil well after application to help settle the material and initiate nutrient availability.
Organic fertilisers are most effective when used alongside organic matter such as compost, worm castings or BEAM bio-innoculant. These materials introduce beneficial microorganisms that assist in breaking down organic inputs and minerals into plant-available nutrients, while also improving soil structure, moisture retention, and overall soil health. Fresh compost/ worm castings are best, and this step is crucial when establishing new beds or growing in poor soils.
Fertiliser application rates should always be adjusted to suit soil type.
If you are unsure of your soil type, a simple jar test can help identify it. This test requires only a jar, soil, and water, and instructions are widely available online.
Sandy soils have low nutrient-holding capacity and tend to leach nitrogen and potassium quickly. Apply lower amounts more frequently. Divide each bag into three portions and apply these portions at intervals throughout the intended growing period.
Clay soils retain nutrients more effectively but can suffer from poor structure and drainage. For new garden beds in both sandy and clay soils, best practice is to begin by increasing organic matter content. Apply a generous layer of compost and work it into the topsoil using a spade or fork before planting. This improves soil structure, nutrient retention, and root development.
Soil pH varies depending on soil type and crop requirements. It is recommended to test soil pH before planting, particularly for crops with specific pH preferences. Low-cost soil pH test kits are available from most garden centres.
Use lime to raise pH (make soil more alkaline)
Use sulphur to lower pH (make soil more acidic)
In many cases, soils with adequate compost content will fall within an acceptable pH range. However, some plants may require more precise pH management for optimal growth so its best to periodically check this with a soil pH test.
