You can harvest "baby" greens just 20 days after planting. For mature leaves, wait about 45 days. Snip the outer leaves first to allow the center of the plant to keep growing. To harvest seeds, you must let the plant flower.
The classic choice for traditional table mustard.
Whether you want to harvest spicy greens for a salad, grow your own seeds to make homemade condiments, or simply enjoy the bright yellow flowers, mustard is a forgiving crop for beginners and a staple for experienced gardeners.
Soil temperature should be at least 4.5°C (40°F), but germination is optimal between 10–21°C (50–70°F).
: Snip off individual outer leaves when they reach your desired size.