Apr 6, 17 Explore Sue Robinson's board "Sweet Potato Plant", followed by 374 people on See more ideas about sweet potato, growing sweet potatoes, container gardeningAug 05, 19 · If your potato plants still have strong stems, you can pull them up to start the harvesting process You'll often get a few smaller specimens clinging to the roots To get the rest of the spuds, or if your stems have totally died back, gently dig several inches away from the base of each plant and lift the soil upMatt G ANSWER Don't worry if your potato plants aren't producing blooms The flowers are not needed in order for the plants to grow delicious tubers underground Instead, the blossoms are linked to production of the small, green aboveground fruits that resemble tomatoes Tomato Potato Combination Plant Alden Lane Nursery What do potato plants look like when they are ready to harvest