Overview of Liquid Fertiliser Applications

Liquid fertilisers have become a popular choice in horticulture and grounds maintenance, due to their straightforward application and fast nutrient absorption.
This resource covers the varieties of liquid fertilisers, their usage, and why they are beneficial for maintaining thriving plants and lawns.

Types of Liquid Fertilisers

Natural liquid feeds come from sources like compost and manure-based materials.
They contain key elements and microorganisms that support soil condition and moisture retention, making them well-suited for environmentally aware gardeners.

Synthetic fertilisers, by contrast, deliver concentrated nutrients and can lead to accelerated growth.
They are effective when quick results are needed, but should be applied with care to prevent over-fertilisation.

Benefits of Using Liquid Fertilisers

One significant benefit is the speed at which nutrients are absorbed by plants.
Since the elements are already in liquid form, plants can access them quickly, leading to faster visible growth.

Unlike granular alternatives, liquid fertilisers allow for more precise application, ensuring that nutrients are spread consistently, reducing excess and targeting specific plant areas.

They are also suited to mature plants or soils suffering from restricted nutrient uptake, where disturbing the soil is undesirable.

Guidelines for Applying Liquid Fertiliser

The most effective time to apply liquid fertiliser is during the plant’s growth period, typically in spring or early summer.
Refrain from applying during extreme heat or dormancy, as it can stress the plants.

• Spraying: Ideal for fast absorption via leaves and for treating specific deficiencies.


• Base application: Targeted application to the root zone for effective nutrient uptake.


• Soil drenching: Encourages deep root development and soil penetration.

Always adhere to the manufacturer’s specified dilution rates.
Excessive use can lead to plant burn, pollution, and stress to plants.

Things to Keep in Mind When Choosing a Liquid Fertiliser

Nutrient ratios are important for matching fertiliser to plant needs.
For instance, high nitrogen supports leafy growth, while phosphorus is beneficial for flowering liquid fertiliser applications and fruiting.

Soil acidity and texture should also guide your selection.
Sandy soils may need more regular feeding due to leaching, while acidic soils may benefit from neutral or alkaline formulations.

If you’re focused on sustainability, an organic product is often the best option, especially for eco-friendly soil health.

Common Queries

How often should liquid fertiliser be applied?

Usually every 2–4 weeks, depending on plant type and growth stage. Check the plant's specific needs.

Is it suitable for lawns?

Yes, it promotes even growth and dense green coverage.

When is the best time of day to apply it?

Early morning or late afternoon to prevent evaporation and reduce plant stress.

Can it be used on houseplants?

Absolutely. Use a diluted mix to avoid overfeeding indoor plants.

Is it safe for pets?

Generally safe once dry. Keep pets away until treated areas have dried fully.

Final Thoughts

Liquid fertilisers offer a practical solution for those seeking vigorous, well-fed plants without overcomplicating their care routine.
Whether you're maintaining a garden, lawn or indoor space, liquid feeding delivers consistent results when used correctly.

To find out further about choosing the right products for your needs, explore the ALS Contracts website.