When to Apply Fertiliser

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veggie and tomato fert
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When to Apply Fertiliser

When do I start fertilising my garden?

Spring is generally seen as the ideal time to start fertilising in the home garden, however these days there is no set date for when spring officially begins! 

Best time to apply fertiliser

As a general rule, apply fertiliser once daytime temperatures consistently reach 18 degrees or higher, and soil temperatures are also rising. This indicates that plants are entering active growth and can benefit from the extra nutrition that fertiliser provides. 

However, the timing can also vary depending on the type of crop:

  • Fruit trees: Key times are spring, fruit-set, and autumn.
  • Flowering plants: Key times are spring and summer.
  • Bulbs: Key times are at planting and in spring.
  • Lawns: Key times are spring, summer, and autumn.

Choosing a fertiliser

How much to use

Always check the instructions on the bag or box of fertiliser for the best guide on how much to apply.

Applying fertiliser

  • New plantings or rejuvenating soil:  Mix evenly with existing garden soil and water well.
  • Feeding existing plants:  Sprinkle fertiliser evenly over ground or around top of the planter/pot, avoiding contact with foliage (leaves). Lightly fork in and water well.
  • Seedlings: For smaller seedlings (before two true leaves) wait until established before fertilising otherwise you may burn and kill the plant.
  • You can apply fertiliser over mulch, just water it in well as normal.
     
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