Swiss chard is more heat tolerant than a number of other common greens, but its growth will slow down when temperatures rise. If you plant it now, don’t expect a particularly large harvest if the heat does arrive. In fact, you might be better off waiting until late summer to plant for a fall harvest—it does best when it can mature with cooler temps. In any case, be sure to keep it well watered, especially if grown in full sun and in hotter temperatures.
Swiss chard is more heat tolerant than a number of other common greens, but its growth will slow down when temperatures rise. If you plant it now, don’t expect a particularly large harvest if the heat does arrive. In fact, you might be better off waiting until late summer to plant for a fall harvest—it does best when it can mature with cooler temps. In any case, be sure to keep it well watered, especially if grown in full sun and in hotter temperatures.