As to the difference in the taste between spinach and Swiss chard, I would say spinach has a mellower taste. The beauty of growing yours in a container is that you can move it to a cooler spot to prevent this. Swiss Chard and Your Health. The leaves can be chopped and cooked. It isn't difficult to grow, but does require some maintenance as trimming the leaves frequently helps improve chard's flavor. The stalks are red or white with large, dark green leaves that can be used as salad leaves when small or cooked like spinach when allowed to grow medium to large leaves.Chard is a leafy vegetable that favours colder weather. The primary reason Swiss chard is such a winning vegetable to grow, however, is down to its vibrant stalks. WHERE TO GROW SWISS CHARD Chard comes from the Mediterranean area so it is quite capable of withstanding hot weather although it would prefer a bit of shade in the mid-summer if possible. Fertilizing: Swiss Chard is a heavy feeder. The strong taste of Swiss chard can be tamed down with olive oil and spices when cooked. Grow Swiss Chard. You can get your seeds to perform even better, however, by soaking them in water for 15 minutes immediately before sowing. They are available in almost every colour under the rainbow: red, orange and yellow, purple and violet, green or brilliant white – and virtually everything in-between. Work the organic matter and fertilizer into the top 6 inches of soil. At direct seeding or transplant: Prepare the soil with the addition of composted organic matter and an all-purpose fertilizer (like Espoma Plant Tone Organic Fertilizer). “Chard” is from the French “carde,” from the Vulgar Latin “carda,” and the Latin “carduus.” It means “cardoon,” which is the artichoke thistle, Cynara cardunculus. Swiss chard is chock full of vitamins, ranking second only to spinach. Growing Swiss chard from seed is very easy and germination rates are usually fairly high. maritima, and the first varieties have been traced to Sicily. Swiss chard prefers cooler temperatures, so once the thermometer climbs up past 75°F or drops below freezing, your plants may bolt. Plant your Swiss chard seeds at a depth of ½ inch (1.3 cm) in rich, loosened, moist soil. It's also hardy to a certain degree in cooler temperatures so a full sun or partial shade site will be fine. That said, chard tends to resist bolting much better than other leafy greens like spinach. The word “Swiss… Halfway through the growing season, apply a side dressing of the same fertilizer. Chard is a “cultivated descendant” of the sea beet, B. vulgaris subsp.