- Written by Robbi Hoy
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Helpful Tip from the Garden Geeks: When cool weather crops, like spinach, lettuce, and members of the cabbage family, send up long flowered stalks from the main stem, it's called bolting. A plant bolts because nature tells it to go to seed. When that happens, the tastes deteriorates and turns bitter. Bolting is usually caused by several days of to cold temperatures (40º-50ºF) early in the plant's growth, but it doesn't actually happen until warmer weather. Cutting the flowers stalks will not stop the poor flavor, so the best thing you can do is avoid setting out your plants too early.