Fruits

How to Plant, Grow, and Care For Hardy Kiwi

While many people think of kiwis as tropical plants, hardy kiwis make a great addition to many temperate gardens. Join plant expert Briana Yablonski as she shares how to plant, care for, and harvest for this unique vining plant.
The first....

time I tried a hardy kiwi fruit, my world turned upside down. I was browsing a booth at a Washington DC farmers market when I spotted a quart box filled with small red and green fruits. They certainly weren’t apples, and although they slightly resembled grapes, they had thicker and less shiny skin. That’s when I saw the sign proclaiming, “hardy kiwi fruits, no need to peel.”

I quickly bought a box and popped one of the kiwis into my mouth. The juicy fruit exploded with a flavor that was sweeter and more intense than the typical kiwi. Why hadn’t I seen or tried this fruit before?

Since then, I’ve learned that the fruit’s poor shelf life limits its commercial sales. However, these plants are great fruiting vines to add to your garden if you live in growing zones 3 through 8. By planting and caring for a hardy kiwi vine, you can enjoy delicious kiwi berries for years to come.
What is Hardy Kiwi?
You’re probably familiar with the fuzzy kiwi (Actinidia deliciosa) found in grocery stores nationwide. While the hardy kiwi (Actinidia arguta) tastes a lot like this common fruit, it is smaller in size and lacks the namesake brown, fuzzy fibers. Instead, its smooth green or red fruits are about the size of a large grape, which makes them the perfect bite-sized snack.

Due to the hardy kiwi’s short shelf life, it’s difficult to find these fruits in the United States. You may be able to snag a pint or quart of the kiwiberries at farmers’ markets, but the best way to enjoy these sweet and juicy fruits is to grow a plant at home.

The perennial plants are woody twisting vines that grow between 10-20 feet each year. The plants begin bearing fruits in their third to fifth year and can continue producing kiwis over the next 20+ years.

Characteristics
The hardy kiwi, otherwise known as the kiwiberry, grape berry, or arctic berry, is a long-lived perennial vine that thrives in temperate environments. Since the plants are deciduous, they lose their leaves in the fall and regrow new foliage in the spring. Most vines grow anywhere from 10-20 feet each year and thrive on arbors and types of trellises. However, they can quickly develop into unruly plants if you forgo pruning and trellising.

The plants produce flowers on new shoots in the spring. Most varieties are dioecious, which means male and female flowers occur on different plants. Only the female flowers can produce fruit, but each flower needs to be pollinated with pollen from a male flower. The clusters of kiwis ripen sometime in late summer or early fall, and a single, healthy plant can produce up to 100 pounds of fruit.

Native Area
The hardy kiwi originated in East Asia, in areas including Japan, Korea, northern China, and northeast Russia. While the plants can tolerate cold temperatures, they need to grow in a location with at least 200 frost-free days to produce fruit.

Planting
The best way to plant hardy kiwi is to transplant small seedlings after the last spring frost. Since most varieties produce male and female flowers on separate plants, make sure to plant at least one male plant for every eight female plants. Reputable plant nurseries will label male and female plants, making it easy to purchase the plants you need.

The vines are susceptible to wind damage, so plant them in a slightly sheltered location. Make sure the location receives at least eight hours of daily light and has good drainage.

Space individual plants ten feet apart and provide them with a supporting trellis. Once the plants begin to grow, select one to two shoots to train as stems. Loosely tie these shoots to a stake to prevent them from twisting and encourage them to grow straight up.