Hi fellow gardeners,
I am a master gardener in Texas and a friend just shared this link with me. Basically if you used any fertilizer with potash (K) in the last 10 years you are entitled to a partial refund regardless of brand. If you are a professional gardener and you have proof of purchase you may get a larger refund. This is the result of price fixing

http://www.classactionrebates.com/settlements/potash/

Deadline is september 2