Syngenta Flowers has taken a significant step towards sustainability in Young Plant Production by reducing the use of peat in the production of young plants at our facility in De Lier (NL). There is increasing pressure to find sustainable alternatives to peat in various industries, particularly in horticulture.

Testing

Our research began in 2021 when various peat alternatives, such as cocopeat, wood fibres, bark, and compost, were tested. Below, you can read how these alternatives compare to peat. After several years of thorough research and testing, various peat alternatives have been implemented in our Young Plant Production. While we continue our research and development, we are already producing the majority of our young plants in peat-free or low-peat soil. Read more

Below, you can read how these alternatives compare to peat.

Cocopeat Compared to Peat

Cocopeat or coconut coir, derived from coconut husks, is gaining popularity as a sustainable alternative to peat in potting soil. This renewable resource offers excellent water retention and aeration properties, promotes strong root growth, and is environmentally friendly. RHP-certified cocopeat is pH-neutral, lightweight, and resistant to bacterial and fungal growth.

Although it contains few nutrients, it can easily be supplemented with fertilisers. Its ability to be reused for multiple growth cycles contributes to its eco-friendly appeal. Cocopeat works well for various plants, especially those that prefer well-draining soil. As the horticultural sector seeks sustainable options, cocopeat is a promising alternative to peat.

Wood Fibres Compared to Peat

Wood fibres are also emerging as an environmentally friendly and sustainable alternative to peat in potting soil. This renewable resource is made from softwood chips or sawdust. Wood fibres offer excellent water retention and air porosity, promoting healthy root growth. Although they contain few nutrients, they improve soil structure and can suppress certain diseases.

Generally, pH-neutral wood fibres work well for various plants, especially those that prefer well-aerated soil. They are often mixed with other materials in potting soil blends, replacing up to 50% of the peat. Wood fibres are ecologically sustainable, but there are some challenges, such as potential nitrogen binding and their cost competitiveness, as other industries also use them. The horticultural sector is currently researching ways to improve the properties of wood fibres. This makes wood fibres a promising alternative to peat.

Bark Compared to Peat

Bark, primarily from conifers, is also a sustainable alternative to peat in potting soil. This renewable resource, often a by-product of the timber and paper industries, offers excellent drainage and aeration while effectively retaining water. Bark improves soil structure, prevents compaction, and can suppress some pathogens.

Generally acidic and low in nutrients, it is ideal for acid-loving plants and woody ornamentals. Bark is available in various grades and can replace significant amounts of peat in potting soil mixes. Although it may initially bind nitrogen, bark decomposes slowly, offering long-term benefits. Cost-effective and environmentally friendly, bark is becoming increasingly popular in horticulture, with ongoing research focusing on optimising its properties for various applications.

Compost Compared to Peat

Although compost is the least stable alternative to peat, it is gaining popularity as an environmentally friendly replacement. This renewable alternative offers numerous benefits, including improved soil structure, enhanced water retention, and slow-release nutrients. Compost supports beneficial microorganisms and promotes plant health and soil biodiversity.

While it generally has a more neutral pH than peat, it may require adjustment for acid-loving plants. The quality and consistency of compost can vary, so it's crucial to purchase from reliable producers. Compost is usually mixed with materials such as perlite or vermiculite and comprises 10 to 20% of potting soil mixes. As the horticultural sector seeks sustainable practices, compost offers a viable solution that recycles organic waste while reducing dependence on non-renewable peat resources.