CHAPTER XVII.—POT-HERB CROPS 134-140 Characteristics 134 Needs 134 What they are 134 Chard 137 Dandelion 138 Characteristics 138 Harvesting 139, 140 Tillage 139 Mustard 137 Where grown 137 Soil requirements 138 Purslane 140 Spinach 134 Forced spinach 136 How sown 137 How to sow 135 New Zealand spinach 136 Where and when grown 134 CHAPTER XVIII.—SALAD CROPS 141-160 What they are 141 What they need 141 Celeriac 159 How eaten 159 How to grow 159 Soil and tillage 159 Transplanting 159 Celery 150 Blanching 154, 155, 156 Care in tilling 153, 154 Diseases 158 Early and late crop 153 Fertilizing 153 How to sow 151 Loss in sprouting 152 Marketing 157 Seed-bed crop 150 Soil requirements 150 Storing 157 Thinning 152 Transplanting 152