10 Best Garden Fertilizers Slow-release
#1 Best Pick
Organic Fertilizer | Organic Slow-Release Tablet Fertilizer,All-Purpose Potted Plant Fertilizer, Houseplant Fertilizer for Raised Garden Beds, Potting Mix
Brand: Generic
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- ➚Multiple Functions: Our indoor/outdoor plant food is ideal for improving pressure resistant and promoting growth for garden and houseplants. Achieve vibrant and healthy plants with this multifunctional formula.
- ➚Enhanced Plant Growth: Take care of your plants and the earth with our slow-release tablets. Our green formula enriches the soil naturally, making it safer and harmless for plant growth. Easy to use and organic, it's the perfect choice for environmentally conscious gardeners.
- ➚Nutrition Masterpiece: Our plant food delivers the perfect balance of nutrients, enriched with slow-release technology for a long-lasting and steady supply. The formula aims to fully meet the varying demands of plants with precise and rich nourishment.
- ➚Simple and Sustainable: Our plant food nurtures the soil through natural processes, reducing the need for harsh fertilizers and eliminating harmful substance runoff. With easy and sustainable application, enjoy healthier plants and a greener future.
- ➚Widely Applicable: Improve your plant's growth with our plant food that boasts of a unique long-release formula. Enjoy bigger, greener and brighter leaves alongside stronger branches that last for months. Suitable for all kinds of plants, our versatile plant food is a must-have for plant enthusiasts.
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#2 Best Value
Scotts Osmocote All Purpose Controlled Slow Release Fertiliser 700g
Brand: Scotts
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- All purpose fertiliser that can be used on all plants with once a year application
- Contains everything plants need for healthy growth
- Releases nutrients at the same rate plants are able to take them up through the roots
- Includes a wetting agent that helps water and nutrients soak in to the soil
- No wastage or run-off into waterways and drains
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#3 Budget Pick
Searles 5 in 1 Organic Fertiliser Pellets, 2.5kg
Brand: Searles
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- Premium high nutrient organic fertiliser
- Promotes strong healthy plant growth, brilliant blooms and rich, healthy fruit and vegetables
- Unique blend of premium grade natural ingredients for superior results
- Adds long life humus build up to the soil, encouraging healthy microbial and earthworm activity
- BFA Registered 100% organic and natural
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#4 Top Choice
Osmocote Garden Beds Fertiliser, 500g
Brand: Scotts
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- THE RELEASE OF NUTRIENTS depends on temperature - more when it's warm and plants are growing and less when it's cold and growth is slow
- SCOTTS OSMOCOTE uses advanced prill technology that ensures even and controlled nutrient release with no wastage
- CONTROLED RELEASE means feeding less often and more effectively; less frequent feeding is more economical and environment-friendly
- BOOSTED LEVELS of iron & magnesium and other trace elements keep leaves greener for longer and promote healthy growth
- LESS THAN 2% phosphorus means it's safe to use on most Australian natives
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#5 Popular Choice
Grow N Save 2.5 kg Granular - 100% Neem Cake Organic Fertiliser | Garden Fertiliser and Soil Conditioner | Natural Indoor Plant Slow Release Fertiliser
Brand: plantneeds
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- A naturally organic product.
- Pure Neem Power: Utilizes pure Neem Cake for plant health and soil vitality - ideal for organic gardens.
- Comprehensive Plant Care: More than fertilizer; it shields plants, enriches soil, nurtures microflora - a true plant companion.
- Soil Guardian: Maintains soil moisture, enhances biology - an effective soil conditioner.
- Naturally Rich Nutrients: Packed with plant nutrients, perfect for indoor and outdoor plants, lawns, and gardens.
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#6 Top Pick
House Plant Fertilizer - Organic Slow-Release Tablet Fertilizer,Garden Plant Food, Potted Plant Fertilizer, Houseplant Fertilizer for Gardening Houseplants
Brand: Generic
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- ✐Abundant Functions: Improve the growth of your indoor and outdoor plants with our multifunctional indoor plant fertilizer. It strengthens pressure resistant and liveliness, making it perfect for your garden and houseplants.
- ✐Plant Safety: Enjoy flourishing plants with our slow-release tablet, enriched with a green formula for an organic and eco-friendly soil environment. Easy to use and safe for plants, our formula ensures outstanding growth with zero harm to the ecosystem.
- ✐Nutrition Masterpiece: Our plant food delivers the perfect balance of nutrients, enriched with slow-release technology for a long-lasting and steady supply. The formula aims to fully meet the varying demands of plants with precise and rich nourishment.
- ✐Long-Term Growth: Utilizing natural processes, this plant food gradually enriches the soil, making it easy to apply and eliminating the need for harsh fertilizers, ensuring simple, sustainable results over time.
- ✐Wide Application: With long-release technology, this plant food ensures bigger, greener, and brighter leaves, while promoting stronger branches, lasting for months, suitable for all types of plants.
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#7 Top Pick
Yates Hortex Garden Gold Fertiliser, 700 g - Quick & Slow Release with Wetting Agent - Promotes Growth, Flowering, and Fruiting
Brand: Yates
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- QUICK & SLOW RELEASE FORMULA - Combines immediate nutrient delivery with long-lasting effects, providing balanced growth and sustained plant health.
- GRANULAR WETTING AGENT - Contains MoisturAid, a wetting agent that ensures the fertiliser and water reach deep into the root zone for optimal absorption.
- COMPREHENSIVE PLANT FOOD - Suitable for most plant types, including flowering shrubs, fruit trees, vegetables, orchids, and indoor plants. Not recommended for Australian native plants.
- PROMOTES VIGOROUS GROWTH - Encourages even new growth, enhances flowering, and boosts fruiting for healthier, more productive plants.
- WORKS IN ALL CONDITIONS - Effective for up to 3 months, even in temperatures as low as 4°C, and suitable for all soil types and potting mixes.
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#8 Top Pick
Scotts Osmocote Controlled Release Plant Food Fertiliser for Native Plants 700g - 6 Months Feed with Trace Elements - All Phosphorus-sensitive Plants - No Surge Growth
Brand: Scotts
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- THE RELEASE OF NUTRIENTS depends on temperature - more when it's warm and plants are growing and less when it's cold and growth is slow
- SCOTTS OSMOCOTE uses advanced prill technology that ensures even and controlled nutrient release with no wastage
- CONTROLED RELEASE means feeding less often and more effectively; less frequent feeding is more economical and environment-friendly
- ADDED WETTING AGENT enhances water absorption into the soil or potting mix and helps plants take up nutrients
- BOOSTED LEVELS of iron & magnesium and other trace elements keep leaves greener for longer and promote healthy growth
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#9 Top Pick
Charlie Carp Natural Pellet Fertiliser - Plant Fertiliser with 3 Months Slow Release Formula - Odourless All Purpose Garden Fertiliser and Plant Food for Indoor Plants and Gardens - 5kg
Brand: Charlie Carp
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- Slow Release Pellets: Charlie Carp All Purpose Fertiliser Pellets gradually feed plants over up to three months after the initial boost, helping provide consistent plant nutrients for gardens, lawns and indoor potted plants without frequent reapplication.
- Supports Soil Health and Moisture Retention: Suitable as indoor plant fertiliser or outdoor garden fertiliser, these pellets help improve soil structure, encourage earthworm activity and support moisture retention for balanced plant growth.
- Rich in Macro and Micro Nutrients: Made from whole European Carp and high in protein, these fertiliser pellets deliver macro and micro nutrients directly to the soil, while natural fish oils help deter common garden pests.
- Made from European Carp: Produced using an invasive freshwater species that impacts river systems, this plant fertiliser turns a pest resource into a practical garden solution while supporting responsible raw material use.
- No Odour Easy Application: Formulated as no odour pellets, this 5kg garden fertiliser is suitable for straightforward storage and use, simply scatter where needed to support lawns, shrubs and houseplants throughout the year.
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#10 Top Pick
Scotts Osmocote Pots, Planters and Indoor Controlled Slow Release Fertiliser 700g
Brand: Scotts
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- Controlled release fertiliser that contains all the nutrients needed for healthy plant growth
- Nutrients are released according to temperature - more when it's warm and plants are growing well, less when it's cold
- Addition of a professional grade wetting agent enhances water absorption into the soil and helps plants take up more nutrients
- Best applied in very early spring and again in autumn
- Suitable for flowering pot plants, leafy pot plants, palms, orchids, ferns, hanging baskets and window boxes
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