
Swan River Trust's Wendy Yorke said with excess nutrients one of the main causes of algal blooms in our rivers, over-fertilising of home gardens was a big issue.
April showers bring on flowers
"Poor gardening practices can lead to excess nutrients like phosphorus and nitrogen flowing into rivers through drains and groundwater run-off," she said. Luckily there are various ways for home gardeners to reduce their impact.
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