We all keep sowing white mustard after the cabbages, when this other green manure feeds the soil without keeping the disease alive down there
Mustard seems like the perfect green manure—until you realize it belongs to the same family as cabbage and actively spreads clubroot disease for decades. This hidden mistake could sabotage your brassica crops for the next 20 years. Phacelia offers the same fast growth and soil benefits without the disease risk.