Phosphorus

Reed is also expected to confirm aims to cut phosphorus pollution from treated wastewater - which causes algae blooms that are harmful to wildlife - in half by 2028, compared to 2024 levels.

The greens are also rich in Vitamin A, Vitamin B, Vitamin B6 and minerals, including magnesium, phosphorus, iron, calcium and potassium.

The California coastline can experience large-scale blooms of algae called Pseudo-nitzschia australis when warm water combines with excess nutrients such as nitrogen and phosphorus.

Algal blooms can form due to low water circulation or after weather events like droughts, floods or hurricanes and can quickly proliferate in warm, nutrient-rich water, particularly if it’s loaded with phosphorus and nitrogen.

The new initiative built on other work including an ongoing £20m project addressing phosphorus levels in soil through the Land Use for Net Zero, People and Nature programme, she added.