The goji berry plant produces goji berries: small, sweet fruits. The goji berry plant starts producing berries in its second year after planting. Goji berry plants can survive zones 5b and above on the USDA Plant Hardiness Zone Map, or down to -15 degrees Fahrenheit. The flowers of the goji berry plant are purple and white. Goji berry plants need about 8 hours of sunlight each day, so if you are growing them inside in a container, you will probably need a grow light to help them along.
Obtain your goji berry plants from a nursery or obtain your seeds from the middle of a goji berry. Each goji berry contains many seeds. If you are looking for a crop right away, don't start from a seed. Start from a plant. More mature plants produce a higher yield of berries.
If you are starting from seeds and are obtaining your seeds from a dried goji berry, plump the dried berries in hot water for a few hours, as you would with a raisin. Cut the berries in half to reveal the seeds.
Plant the seeds or plant in well draining soil. Seeds should be planted less than an inch from the surface in a container. Keep the soil moist, but don't soak it.
If you are growing from seeds, when they have sprouted and few leaves have developed, transfer them to a larger container, if you plan on growing the plants indoors; or to a patch of soil in the yard, if you plan to grow them outdoors.
Prune the plant when it grows to your desired height and width, as goji berry plants can become very large, since they grow both upward, like a shrub, and outward, like a vine.
Berries are ripe when they are bright red in color.