The kiwi plant originates from southwestern China and was introduced to Europe, the United States, and New Zealand in the early 20th century. Since then, it has spread widely and is now cultivated in many parts of the world. If you enjoy this fruit and want to learn when kiwi trees bear fruit and related information, continue reading this article.
When Does Kiwi Fruit Bear Fruit?
Kiwi plants flower in spring and produce fruit in summer or autumn. It is worth noting that kiwi fruits grow on vigorous vines that require strong structural support. They can be trained on a trunk, trellis, or sturdy fence, as the vine may grow up to 4.5 meters (15 feet) high.
Most kiwi plants are either male or female, and both are required for fruit production. One male plant can pollinate up to eight female plants. However, some varieties are self-fertile, meaning only one plant is needed for pollination and fruiting, which helps save space.
Reasons Why Kiwi Trees May Not Produce Fruit
1. The Tree Has Not Reached Maturity
A common reason kiwi trees fail to flower or fruit is that they have not yet reached the required maturity stage. Kiwi vines typically begin producing flowers and fruit after about three years, though it may take longer in some cases. Peak fruit production usually occurs when the vine is eight years old or older, and the plant can continue producing fruit for 40 years or more.
2. High Temperatures and Insufficient Chilling Hours
Like many fruiting plants, kiwi requires exposure to a certain number of winter chilling hours. Temperatures should range between 0°C and 7°C (32°F–45°F) to properly set flowers and fruit.
The number of required chilling hours varies by variety, so it is essential to select cultivars suited to the local climate. Warm spells during winter can reduce the accumulated chilling hours below the level needed for flowering and fruiting.
3. Unsuitable Planting Location
If kiwi vines are mature and have received sufficient chilling hours but still do not bear fruit, the issue may be an unsuitable growing site. Below are the optimal conditions for kiwi tree growth and fruiting:
- Light: Kiwi trees should be grown in full sun or partial shade, receiving at least 8 hours of sunlight per day. Increased sun exposure generally results in higher fruit production.
- Soil pH: Kiwi plants prefer acidic soil, with an ideal pH range between 5.0 and 6.8.
- Soil Type: Kiwi should be planted in fertile, moist, well-drained soil, as the roots are highly susceptible to rot in poorly drained conditions.
Tips for Caring for Kiwi Trees
- Provide additional irrigation during peak summer heat or extended dry periods.
- Avoid fertilizing during the first year; afterward, use balanced fertilizers.
- If the plant is not flowering, prune lateral branches two to three times during the growing season.
- Prune female vines in winter, while male vines should be pruned in early summer after flowering.
