Ah lettuce; the most popular of the salad greens, offering a long season of sweet, crispy leaves. It’s one of my favourite veggies and I plant at least two dozen varieties each year, enjoying the variation of leaf textures and colours.
For us, the lettuce harvest begins in our cold frames in early spring, followed by the open garden from late spring through early summer, and just when I think the lettuce harvest will never end, the summer heat kicks in and our lettuce bolts. Bolting, when the plants shift from leafy growth into flower production, is caused by a number of factors including high temperatures, long daylight hours, and less moisture – in essence – summer.
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