Harrowden's specially formulated sedum fertiliser, designed for living roofs, covers 65m2. Sedum fertiliser is an essential part of its recommended green roof maintenance regime.

This slow-release organic feed is formulated for healthy and robust plants and maximises benefits for any living green roof.

Benefits of sedum fertilisers

Sedum fertilisers offers a wealth of advantages for green roofing such as biodiversity, insulation, rainwater amelioration, and oxygen production, although, it does depend on there being a robust, healthy plant layer. Because plants on a green roof are living in a relatively shallow layer of growing medium, they don’t have the same access to water and nutrients as those at ground level. It’s important to make sure that these plants are well nourished so that they will be able to withstand summertime droughts and winter frosts.

Professionals use tubs covering 65m2. Natural green roof feed may be applied at any time of year. However, for best results, apply in early Spring and again in early Summer. It is recommend you follow the instructions provided with the product, and that the suggested application rates are not exceeded.

Key Points

  • For use on a biodiverse green roof or our range of Sedum mats

  • Resealable container for safe storage

  • Can be applied at any time

  • Slow release nutrients provide a balanced feed for your plants

Composition

N8-P4-K8 + 3% MgO, trace elements, seaweed, humates, zeolites

  • Total Nitrogen (N) – 8%

  • Phosphorous Pentoxide (P2O5) – 4% (1.74% P)

  • Potassium Oxide (K2O) – 8% (6.64% K)

  • Magnesium Oxide (MgO) – 3% (1.8% Mg)

Coverage

Each bag covers 65m² at the recommended application rate of 30g/m²