Gypsum is a highly available calcium source that provides immediately available sulphate sulphur, according to Lindsay Head - an independent horticulture consultant.
» Latest Print Issues Online
The Hound
A step too far
OPINION: For years, the ironically named Dr Mike Joy has used his position at Victoria University to wage an activist-style…
Save us from SAFE
OPINION: A mate of yours truly has had an absolute gutsful of the activist group SAFE.
» eNewsletter
