The term ‘peace lily fertiliser’ is a combination of two key elements in garden and houseplant upkeep: peace lilies and fertiliser. Peace lilies, scientific name Spathiphyllum, are popular for their low maintenance and attractive look. They complement various spaces with their glossy leaves and beautiful white flowers. But to ensure their health and continuous blooming, they need nourishment beyond just water and light – enter fertiliser.
Choosing the right fertiliser is crucial for peace lily care. It’s not just about keeping your plants alive; it’s about promoting lush growth and vibrant flowers. Let’s delve into the world of peace lily fertilisation, exploring the best types, application methods, frequency, and even natural alternatives.

Understanding Peace Lily Nutritional Needs
Before we dive into the specifics of fertilising, it’s essential to understand peace lily preferences. As tropical plants, they thrive in warm, humid environments with filtered or indirect sunlight. They also typically prefer slightly acidic soil with good drainage. Keeping this in mind helps tailor our fertilisation strategy for the best results.
Peace lilies are not heavy feeders, meaning they don’t require frequent fertilising. Overfeeding can lead to excessive growth and fewer flowers – not the desired outcome. Thus, fertilisation should be done strategically, catering to the plant’s needs during its active growth periods.
Best Types of Fertilisers for Peace Lilies
There are several types of fertiliser available, but not all are suitable for peace lilies. Here are two primary types that work well:
- Balanced, Water-Soluble Fertiliser: A fertiliser with an NPK ratio close to 20-20-20 or 10-10-10 (N-P-K represents Nitrogen, Phosphorus, and Potassium) works well for peace lilies. This balance provides the plant with the right amount of nutrients without encouraging excessive growth.
- Slow-Release or Granular Fertiliser: These fertilisers release nutrients gradually over time, feeding the plant consistently. They are convenient for maintaining even nutrient levels but may require more frequent application.
Both types can be effective. The choice depends on your preferred feeding method and how often you want to fertilise your plant.

When and How to Fertilise Peace Lilies
Peace lilies are dormant during winter and prefer to be fertilised in spring and summer, their active growing seasons. Here’s a general fertilisation guide:
- Spring and Summer: Apply a balanced, water-soluble fertiliser every 6-8 weeks or use a slow-release fertiliser according to the package instructions. Dilute water-soluble fertiliser to half the recommended strength to prevent burning the roots.
- Autumn and Winter: Reduce fertilisation to once every 3-4 months. Peace lilies can tolerate drought-like conditions during these periods.
Fertilise peace lilies by applying the solution at the base of the plant, allowing it to soak into the soil. Never fertilise dry soil as it can scorch the roots.
Natural Fertiliser Alternatives for Peace Lilies
If you prefer an eco-friendlier approach, natural fertilisers can be an excellent alternative:

Compost and Manure
Rich in essential nutrients, well-rotted compost and manure can benefit peace lilies. Incorporate it into the soil before planting or mixed with your regular potting soil. Keep in mind that fresh manure can burn plant roots, so ensure it’s well-composted before use.
Eggshells and Banana Peels
Shredded eggshells and banana peels, buried in the soil, provide calcium and potassium respectively. These nutrients are crucial for plant growth and flower production. Plus, they provide additional benefits like improved soil structure and drainage, and pest deterrence.
Peace lilies aren’t demanding plants, and with the right fertilisation, they’ll reward you with stunning white flowers and lush foliage. Whether you opt for commercial or natural fertilisers, always remember: less is more with peace lilies. Happy gardening!



