Healthy Plants, Guaranteed – If your plant doesn’t thrive, we’ll replace it.
Healthy Plants, Guaranteed
If your plant doesn’t thrive, we’ll replace it.
Packed for Plant Health
Carefully prepared to arrive healthy and ready to plant.
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Delivered directly from our nursery network.
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Grown by professional Australian nurseries.
Richgro 2.5kg Granular Sulphate Of Potash - 2.5kg is backordered and will ship as soon as it is back in stock.
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| $100 OFF | $3000 or more |
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No. We operate as an online-only nursery and do not offer customer pickups.
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Yes. Add your preferred delivery timing in the order notes at checkout.
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Your order will be left in a safe location at the delivery address.
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Covered by our 30-Day Satisfaction Guarantee for complete peace of mind.
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Richgro 2.5kg Granular Sulphate of Potash is a potassium-rich fertiliser designed to boost fruit quality and enhance flower colour. Its slow-release granular formula supports healthy growth while helping plants resist fungal stress.
✔ Boosts Fruit & Flower Quality - High potassium levels improve fruit development and flower colour.
✔ Supports Plant Health - Helps strengthen plants and improve resistance to fungal attack.
✔ Ideal Potassium Supplement - Perfect for gardens using organic fertilisers low in potassium.
✔ Slow Release Nutrition - Provides a steady supply of potassium over time.
✔ Easy Granular Application - Simple to spread evenly across soil and lawns.
✅ Fruit Trees & Plants - Encourages better fruit quality and yield.
✅ Flowering Plants - Enhances colour and bloom performance.
✅ Garden Beds - Improves potassium levels for balanced nutrition.
✅ Lawns & Pot Plants - Suitable for areas needing a potassium boost.
Product Type: Potassium fertiliser
Weight: 2.5 kg
Nutrient Focus: Potassium
Release Type: Slow release
Form: Granular
Application: Soil and lawn application
Application: Spread evenly over soil or lawn area.
Watering: Water in well after application.
Gardens & Pots: Apply as needed to boost potassium levels.
Frequency: Reapply according to plant requirements.
What does sulphate of potash do for plants?
It improves fruit quality, flower colour, and overall plant strength.
Is this suitable for lawns?
Yes, it can be used on lawns as well as gardens and pot plants.
Does this fertiliser release slowly?
Yes, the granular formula provides a slow release of potassium.
Can this be used with organic fertilisers?
Yes, it is ideal for supplementing organic fertilisers that are low in potassium.
Is this easy to apply?
Yes, the granular form makes it easy to spread evenly.
Supplied in a 2.5kg bag and packed for easy handling and storage.
Enhance flowering and fruit quality with Richgro Granular Sulphate of Potash.
Select size