Product Review
Start planting about 2 to 3 weeks before last expected frost. Sow seeds ½ to 1 inch deep, 2 to 6 inches apart, in rows 18 to 24 apart. Like beets, chard "seeds" produce more than one plant, and so will require thinning. Thin to 6- to 12-inch spacings. The Rainbow Mixture Swiss Chard seeds can be planted two to three weeks before the last average frost of the season, half an inch deep in a soil with an ideal pH level between 6 and 6.4. Leave eighteen inches between the seeds to allow enough room for growth. The Rainbow Mixture will do best with full or partial sun, and will need to be watered evenly. When the plants are between six and eight inches tall, the leaves can be harvested by cutting them an inch and a half above the ground. If harvested carefully, the plants can produce more leaves that can be harvested again.