Copper Sulphate Blue Stone 1kg to 25kg – Fungicide, Algaecide & Root Killer Garden Soil & Mulch David Grays Gro Natural Derris

David Grays Gro Natural Derris Dust is a safe and effective organic insecticide derived from the Derris plant

with the remaining 20% coming from fresh foods for variety and enrichment

Which wild birds does it attract

What sets this mix apart is the high proportion of canary seed

Straw should not replace their main nutritional fibre source

Copper Sulphate Blue Stone 1kg to 25kg – Fungicide, Algaecide & Root Killer Garden Soil & Mulch David Grays Gro Natural DerrisCopper Sulphate Blue Stone 25kg: Multi Purpose Fungicide, Algaecide & Root Treatment Copper Sulphate, also known as bluestone or blue vitriol, is a bright blue crystalline compound (copper sulphate pentahydrate) with a wide range of uses across agriculture, horticulture, water treatment and industry. It dissolves readily in water and is valued as an economical fungicide, algaecide and copper source, which is why it's been a staple product for growers,