Plant name | Zone | Start seeds indoors | Start seeds outdoors | Plant seedlings/transplants outdoors | Plant spacing | # plants per person |
Swiss chard | 3a | March 15-April 1 | April 15-May 1; Aug. 1-15 | April 15-May 1 | 12-18 inches | 3 |
Swiss chard | 3b | March 15-April 1 | April 15-May 1; Aug. 1-15 | April 15-May 1 | 12-18 inches | 3 |
Swiss chard | 4a | March 15-April 1 | April 15-May 1; Aug. 1-15 | April 15-May 1 | 12-18 inches | 3 |
Swiss chard | 4b | March 15-April 1 | April 15-May 1; Aug. 1-15 | April 15-May 1 | 12-18 inches | 3 |
Swiss chard | 5a | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 5b | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 6a | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 6b | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 7a | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 7b | Feb. 15-March 1 | March 15-April 1; Sept. 1-15 | March 15-April 1 | 12-18 inches | 3 |
Swiss chard | 8a | Jan. 15-Feb. 1 | Feb. 15-March 1; Oct. 1-15 | Feb. 15-March 1 | 12-18 inches | 3 |
Swiss chard | 8b | Jan. 15-Feb. 1 | Feb. 15-March 1; Oct. 1-15 | Feb. 15-March 1 | 12-18 inches | 3 |
Swiss chard | 9a | Dec. 15-Jan. 1 | Jan. 15-Feb. 1; Oct. 1-15 | Jan. 15-30 | 12-18 inches | 3 |
Swiss chard | 9b | Dec. 15-Jan. 1 | Jan. 15-Feb. 1; Oct. 1-15 | Jan. 15-30 | 12-18 inches | 3 |
Swiss chard | 10a | Nov. 1-15; Aug. 1-15 | Jan. 1-15; Oct. 1-15 | Jan. 15-30 | 12-18 inches | 3 |
Swiss chard | 10b | Nov. 1-15; Aug. 1-15 | Jan. 1-15; Oct. 1-15 | Jan. 15-30 | 12-18 inches | 3 |
Swiss chard | 11a | Jan. 1-15 | March 1-30 | March 1-30 | 12-18 inches | 3 |
Swiss chard | 11b | Jan. 1-15 | March 1-30 | March 1-30 | 12-18 inches | 3 |
* Although traditionally viewed as a cool-weather crop, Swiss chard tolerates heat better than many other greens.