Ammonia and urea fertilizers Sulzer Yellow leaves? Droopy stems? Brown spots? Your plant is REALLY talkingyou just need to know the signs! Drop your plant problem in the comments & we'll guide you! Even small space gardeners can enjoy a crop of homegrown spinach when you plant in pots. For the longest harvest, sow more seeds every two weeks in spring. For in depth advice on growing spinach in See the BMW XM on the Production Line in Spartanburg