Cardinal Swiss Chard (54 Days)
An improved rhubarb chard, developed in Switzerland. Stems are a deep ruby red, and plants are large and productive. Cardinal Swiss Chard has a darker color on larger plants compared to Rhubarb chard. Its narrower, savoyed leaves have a mild, slightly sweet flavor that is as nice raw as it is cooked.
Germination: 5-10 days
Germination Temperature: Optimum soil temperatures 70-85ºF.
Seed Sowing Depth: 1/2” deep
Starting Indoors: 4-6 weeks before last frost. Sow 2-3 seeds per cell/pot. Thin to the strongest seedling. Fertilize the seedlings every 7-10 days with a liquid or water soluble fertilizer, diluted to ¼ of suggested measurement. Start transplanting a week or two before last frost. Space 10-18" apart.
Sowing Outdoors: Mid spring into early summer. Starting when soil temperature reaches at least 50ºF. Germination is slower in cooler slow temperatures. Sow 3-4 seeds every 10-18” apart. Thin to the strongest seedling per space. Sow 40-50 days before first fall frost for late summer/fall harvest .
How much does a packet plant: 10-15 foot single row
Harvest: Remove outer leaves starting at 4-6” for baby salad greens. Use the mature leaves and center ribs cooked or raw.
Tips: Cardinal Swiss Chard Needs fertile well drained soil. Tolerates both cold and hot temperatures and can grow from spring until frost. Sow a few times a summer for continuous greens.