CompleteGrow has launched a new citrus-specific fertiliser formulated to improve flowering, fruit set, and overall tree health in lemon, lime, orange, and mandarin trees. The potassium-rich formula is designed to address common nutritional imbalances that cause yellowing leaves, poor flowering, and inconsistent fruit production in Australian gardens.
Sydney, NSW, Australia, 29th Jan 2026 — Australian plant nutrition brand CompleteGrow has announced the release of its latest citrus-specific fertiliser, developed to help home gardeners achieve greener foliage, stronger flowering, improved fruit set, and healthier citrus trees across a wide range of varieties including lemons, limes, oranges, mandarins, and grapefruit.
The newly released product, available as a
citrus fertiliser, has been formulated specifically to support the biological needs of citrus trees, delivering balanced nutrition for both vegetative growth and reproductive performance.
Citrus trees remain one of the most popular fruit trees in Australian backyards, yet they are also among the most commonly reported problem plants. Yellowing leaves, excessive leafy growth without flowering, poor fruit set, and inconsistent harvests are frequent frustrations for growers of all experience levels.
According to CompleteGrow, these issues are rarely caused by pests or disease alone. In most cases, the underlying problem is a nutritional imbalance — a gap the new product has been designed to directly address.
The citrus plant fertiliser features a purpose-built nutrient profile with an NPK ratio of 6-2-12, intentionally weighted to support the unique growth cycles of citrus trees. This balance provides moderate nitrogen to sustain healthy leaf growth, a complementary amount of phosphorus for roots and early reproductive development, and elevated potassium to fuel flowering, fruit set, and fruit maturation.
“Citrus trees are heavy feeders, but they are also very particular about what they need,” said a spokesperson for CompleteGrow. “Many gardeners unknowingly use general-purpose fertilisers that supply nitrogen but fail to provide enough potassium and essential trace elements. Potassium is crucial in carbohydrate transport, water regulation, flowering, and fruit development — exactly the stages where many citrus trees struggle.”
In addition to the tailored NPK balance, the fertiliser for citrus trees includes a suite of chelated trace elements such as iron, zinc, manganese, boron, and copper. These micronutrients support chlorophyll production, enzyme function, and healthy cell development — helping trees avoid common deficiencies that can lead to leaf yellowing, poor vigour, and reduced productivity.
CompleteGrow notes that understanding the nutritional needs of citrus trees is a key step toward better production. The company has previously shared in-depth guidance explaining
why citrus trees struggle to fruit, outlining how imbalances in nutrients, watering inconsistency, and insufficient sunlight can disrupt flowering and fruit set.
Unlike many ornamental garden plants, citrus trees are evergreen fruit producers that remain active for much of the year. They continually produce leaves, roots, flowers, and fruit — all of which draw on soil nutrient reserves. Without replenishment in the right proportions, trees can quickly show signs of stress.
Supporting Holistic Citrus Care
While nutrition plays a central role in optimal citrus performance, CompleteGrow emphasises that fertiliser works best when combined with sound horticultural practices.
These include:
• Providing at least six hours of direct sunlight daily
• Using well-draining soil or potting mix
• Deep, consistent watering during active growth
• Mulching to conserve moisture and protect root systems
• Light pruning to maintain airflow and reduce disease risk
For gardeners seeking broader guidance, CompleteGrow offers a complete resource on
how to plant, grow and care for citrus trees, covering planting techniques, seasonal care, and long-term strategies for thriving citrus.
Designed for Modern Australian Gardening
The citrus fertiliser is suitable for both in-ground and potted citrus trees, reflecting the growing popularity of container gardening on balconies, patios, and small urban spaces. Potted trees often require more frequent nutrition due to regular watering and limited soil volume; this product provides consistent, balanced feeding across environments.
“Many gardening recommendations come from overseas climates and soil types,” the spokesperson added. “Australian soils often have low organic matter and micronutrient availability, so our formulations are designed to perform reliably under local conditions.”
Early feedback from gardeners has highlighted visible improvements in leaf colour, stronger flowering, and more reliable fruit set within weeks of use — affirming the fertiliser’s practical value.
Media Contact
Organization: Complete Grow
Contact Person: Daniel
Website: https://completegrow.com.au/
Email: Send Email
Address 2: Parramatta
City: Sydney
State: NSW
Country:Australia
Release id:40737
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