How to Grow Kiwi in the UK

Kiwi, also known as kiwifruit, is an exotic and nutrient-packed fruit that can be successfully grown in the UK with the right approach. While it is native to China, kiwifruit has been widely cultivated in New Zealand and other temperate regions. 

The UK climate, particularly in southern and sheltered areas, can support kiwi growth with proper care and protection. This guide will take you through everything you need to know about growing kiwi plants in the UK, whether in a garden, greenhouse, or container.

Understanding Kiwi Varieties

There are three main types of kiwifruit that can be grown:

1. Green Kiwi (Actinidia deliciosa) – This is the classic variety with fuzzy brown skin and bright green flesh. It has a tangy-sweet flavour and is the most commonly found kiwi in supermarkets.

2. Golden Kiwi (Actinidia chinensis) – A smoother-skinned variety with golden-yellow flesh, it is sweeter and less acidic than green kiwi, making it a favourite for fresh consumption.

3. Red Passion Kiwi (Actinidia chinensis var.) – This variety features reddish skin and striking red-fleshed fruit with a tropical, berry-like sweetness.

All these varieties can be grown in the UK, but choosing hardy or self-fertile cultivars will make the process easier, especially in cooler climates.

Step-by-Step Guide to Growing Kiwi in the UK

1. Choosing the Right Environment

Kiwi plants are vigorous vines that need ample space and support. They thrive in:

• Gardens: A sunny, sheltered spot with well-draining soil is ideal.

• Greenhouses or Polytunnels: These provide added protection and warmth, which is beneficial for certain varieties.

• Containers: If space is limited, kiwis can be grown in large pots and trained up trellises.

2. Sourcing Kiwi Seeds

• You can order kiwi fruit seeds here: https://exoticfruits.co.uk/collections/kiwi-seeds 

3. Planting and Soil Requirements

• Soil: Kiwi plants prefer well-drained, slightly acidic to neutral soil (pH 5.5-7.0). Improve heavy clay soil by adding compost and sand for better drainage.

• Planting Time: The best time to plant kiwi is in late winter or early spring when the risk of frost has passed.

• Spacing: Kiwi vines need at least 3–4 meters (10–13 feet) of space per plant to allow proper growth and airflow.

4. Providing Support for Growth

Kiwi vines require sturdy support structures, such as:

• Trellises: A strong trellis or pergola allows the vine to climb and spread.

• Wires and Fences: Horizontal wires stretched along walls or posts can help train the vines for better fruit production.

5. Watering and Feeding

• Watering: Kiwi plants need consistent watering, particularly during dry spells. Keep the soil moist but not waterlogged.

• Feeding: Use a balanced fertilizer rich in nitrogen, phosphorus, and potassium during the growing season (spring to early autumn). Apply compost or well-rotted manure annually.

6. Temperature and Light Requirements

• Temperature: Kiwi plants can withstand UK winters but may require frost protection in severe cold. Mulching around the base helps insulate roots.

• Light: Provide at least 6–8 hours of direct sunlight per day for optimal growth.

7. Pollination and Flowering

• Male & Female Plants: If growing non-self-fertile varieties, one male plant is needed for every 4–5 female plants.

• Hand Pollination: In the absence of pollinators, use a small brush to transfer pollen from male to female flowers.

8. Pest and Disease Management

• Pests: Watch out for aphids, spider mites, and caterpillars. Neem oil or insecticidal soap can help control infestations.

• Diseases: Root rot can occur if the soil is too wet. Ensure proper drainage and avoid overwatering.

9. Harvesting Your Kiwi Fruit

• Timing: Kiwi fruit ripens in late autumn (September to November).

• Signs of Ripeness: The fruit should feel slightly soft when pressed. If picked early, they can be stored and ripened indoors.

Why Grow Kiwi in the UK?

Growing kiwi in the UK is both a rewarding and sustainable way to enjoy fresh, homegrown fruit. With their vigorous growth and long lifespan, kiwi vines can produce fruit for decades if well maintained. By following these steps, you can successfully cultivate your own delicious kiwis, whether in a garden, greenhouse, or even a large container.

For more exotic fruit plants, visit exoticfruits.co.uk and start your exotic fruit-growing journey today!