Cauliflower is trickier to grow in some climates than its cousin, broccoli, but the effort is well worth it. And the reward of harvesting a large, attractive head from your garden will give a great sense of satisfaction. Plants grow best in cool, moist weather. When your planting in the garden, make sure the rows are at least 15" apart. Make sure you use fertilizer frequently as cauliflower likes a good magnesium level and will show symptoms of deficiency when the soil is allowed to become too acidic.