Allotment Gardening Advice Help Chat

Growing => Grow Your Own => Topic started by: Stewpot72 on January 18, 2024, 14:49

Title: Polyhalite
Post by: Stewpot72 on January 18, 2024, 14:49

Has anyone used this fairly new fertiliser, otherwise known as polysulphate. Apparently mined below the north sea and is the best thing since the last best thing.

Title: Re: Polyhalite
Post by: Subversive_plot on January 18, 2024, 15:06

Polyhalite will provide K, Ca, Mg and S, based on it's chemical formula. If your soil and crop need more of those, it might be beneficial.  I'd be careful to not over-apply (follow whatever directions are given).

Note that it does not provide N or P. You might need another fertiliser if you need more of those nutrients.