Ideal pH Levels for Fruit Trees

When a plant is in soil that is not optimized for its growth needs, essential minerals and nutrients become locked up in the soil, unavailable to the plant. If your fruit tree is not as healthy as it should be or if it doesn’t provide ample amounts of fruit, you should conduct a soil test to see if the soil pH level needs adjusting. For most plants, the optimum pH range is from 5.5 to 7.0. But some plants will grow in more acidic soil or may require a more alkaline level. The pH is not an indication of fertility, but it does affect the availability of fertilizer nutrients.

  • Apple 5.0 – 6.5
  • Apricot 6.0 – 7.0
  • Avocado 6.0 – 6.5
  • Banana 5.5 – 6.5
  • Black Sapote 6.5 – 7.5
  • Blackberry 5.5 – 6.5
  • Blueberry 4.5 – 5.5
  • Cedar Bay Cherry 6.6 – 7.3
  • Ceylon Hill Gooseberry 6.2 – 6.5
  • Cherry 6.6 – 7.3
  • Citrus 5.5 – 7.0
  • Cranberry 4.5 – 6.0
  • Coffee 6.0
  • Cashew 5.0 – 6.5
  • Dragon Fruit 5.5 – 7.0
  • Durian 5.0 – 6.5
  • Feijoa 6.0 – 7.0
  • Fig 6.0 – 7.8
  • Grapes 6.0 – 7.0
  • Grumichama 5.5 – 6.5
  • Guava 6.0 – 7.0
  • Jackfruit 6.0 – 7.5
  • Kiwi 5.0 – 6.5
  • Lychees 5.5 – 7.5
  • Mango 5.0 – 7.0
  • Miracle Fruit 4.5 – 5.5
  • Mulberry 5.5 – 7.0
  • Nashi 6.0 – 7.0
  • Nectarine 6.0 – 7.0
  • Orange 6.0 – 7.5
  • Passionfruit 5.5 – 7.0
  • Papaya 6.0 – 7.0
  • Peach 6.0 – 7.0
  • Pear 6.0 – 7.0
  • Persimmon 6.5 – 7.5
  • Pineapple 4.5 – 6.5
  • Plum 6.0 – 7.0
  • Pomegranates 5.5 – 7.0
  • Raspberry 5.5 – 6.5
  • Rambutan 5.5 – 6.5
  • Melon 6.0 – 6.5
  • Mangosteen 5.5 – 6.8
  • Strawberries 5.8 – 6.5
  • Sugar Apple 4.5 – 7.0
  • Star fruit 5.5 – 6.5
  • Tamarillo 5.8 – 7.0
  • Watermelon 6.0 – 6.5

You can easily raise your garden’s soil pH by applying agricultural lime or potassium carbonate to the soil. The solubility of lime is relatively low, so it’s impossible to apply it through irrigation. But potassium carbonate is highly soluble and can be applied by drip irrigation. Use granular sulfur to lower the soil pH in your garden. You can also use iron sulfate and aluminum sulfate instead of using granular sulfur. They react more quickly with the soil than elemental sulfur. Except for that, there are some natural ways to lower the soil pH by applying organic materials such as peat moss, pine needles and pine bark to the soil.

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