Beefsteak Tomatoes are warm-weather plants, so make sure that you plant them after frost danger has passed. Or start them indoors six to eight weeks before the last frost date. You’ll need to trellis, stake or cage these monster ‘maters. The vines are vigorous, but they can be trained by trimming and tying them off at regular intervals. Beefsteak Tomatoes are temperature-sensitive, and they ripen best between 55 to 85 degrees. Harvest your Beefsteak Tomatoes when they easily come away from the vine. Then get ready to enjoy their succulent goodness.