Goji berry
Lycium barbarum
Goji berries, known scientifically as Lycium barbarum, are celebrated for their nutrient-rich berries and health benefits. Native to Asia, they are increasingly popular among gardeners for their resilience and ability to produce fruit in various conditions.
Everything it needs
9 essentials at a glance
Watering
Goji berries prefer consistently moist soil, especially during the growing season.
Water deeply once a week, adjusting to every 3-4 days during hot, dry spells. In winter, reduce watering to once every two weeks. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and leaf drop.
Light
Goji berries thrive in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placement is in a south-facing garden bed or container. They can tolerate partial shade but may produce fewer berries.
Soil
The ideal soil for goji berries is well-draining, sandy loam with a pH range of 6.0 to 8.0.
Ensure good drainage to prevent root rot; a mix of potting soil, sand, and compost is recommended for container planting.
Humidity
Goji berries prefer moderate humidity levels around 40-60%.
To increase humidity, mist the leaves or place a humidity tray nearby. Signs of low humidity include brown leaf tips and curling leaves.
Temperature
Goji berries thrive in temperatures between 65°F to 85°F (18°C to 29°C).
They are hardy in USDA zones 5-9 and can tolerate temperatures down to 0°F (-18°C). Protect them from extreme heat and frost during winter.
Fertilizing
Use a balanced fertilizer with an NPK ratio of 10-10-10 every 4-6 weeks during the growing season.
Reduce fertilization in late summer and fall. Signs of nutrient deficiency include yellowing leaves (nitrogen) and poor fruit production (phosphorus).
Pruning
Prune goji berry plants in late winter or early spring before new growth begins.
Use clean, sharp pruning shears to remove dead or crossing branches, shaping the plant to encourage airflow. Deadheading is not necessary as they produce fruit on new growth.
Repotting
Repot goji berries every 2-3 years or when roots become pot-bound.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of drainage holes and stunted growth. Follow by gently removing the plant, loosening the roots, and placing it in fresh soil.
Propagation
Goji berries can be propagated through stem cuttings or seeds.
For cuttings, take 6-8 inch sections in early spring, dip in rooting hormone, and plant in moist soil. For seeds, collect from ripe berries, clean, and sow in spring. Germination may take 2-4 weeks.
When it's unhappy
Yellow leaves
Why it happens
Often caused by over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and adjust watering schedule. Fertilize with a balanced fertilizer if nutrient deficiency is suspected.
Root rot
Why it happens
Excessive moisture and poor drainage.
How to fix it
Ensure proper drainage and reduce watering frequency. Remove affected roots and repot in fresh, well-draining soil.
Pest infestations (aphids, spider mites)
Why it happens
Common pests attracted to stressed plants.
How to fix it
Inspect plants regularly and treat with insecticidal soap or neem oil if pests are detected.
Poor fruit production
Why it happens
Insufficient sunlight or nutrient deficiency.
How to fix it
Ensure the plant receives at least 6-8 hours of sunlight daily and fertilize appropriately.
Leaf drop
Why it happens
Can be due to sudden temperature changes or under-watering.
How to fix it
Maintain consistent watering and protect plants from extreme temperature fluctuations.
Care through the year
Spring
In spring, focus on pruning and fertilizing your goji berry plants to encourage new growth. Ensure they receive plenty of sunlight and water regularly as temperatures rise.
Summer
During summer, maintain consistent watering and monitor for pests. Mulch around the base to retain moisture and keep roots cool. Fertilize every 4-6 weeks.
Fall
In fall, reduce watering as temperatures cool down. Harvest ripe berries and prepare the plant for winter by cutting back on fertilization.
Winter
In winter, protect goji berries from frost by covering them if necessary. Water sparingly, allowing the soil to dry out between waterings.
Toxicity & Safety
Goji berries are generally non-toxic to pets and children. However, unripe berries and leaves can cause mild stomach upset if ingested in large quantities. Symptoms may include nausea and vomiting.
Good to know
How often should I water my goji berry plant?
Water your goji berry plant deeply once a week, increasing frequency during hot, dry spells. Ensure the soil remains consistently moist but not soggy.
Why are my goji berry leaves turning yellow?
Yellowing leaves can indicate over-watering or nutrient deficiency. Check soil moisture and consider fertilizing if necessary.
When is the best time to prune goji berries?
The best time to prune goji berry plants is in late winter or early spring before new growth begins, promoting healthy growth and fruit production.
How do I propagate goji berries?
You can propagate goji berries through stem cuttings or seeds. For cuttings, take sections in spring and plant them in moist soil. For seeds, collect and sow cleaned seeds in spring.
What pests should I watch for on my goji berry plants?
Common pests include aphids and spider mites. Regularly inspect your plants and treat infestations promptly with insecticidal soap or neem oil.
How can I increase humidity for my goji berry plant?
To increase humidity, mist the leaves regularly or place a humidity tray filled with water nearby. This helps maintain an optimal environment for growth.
What is the ideal temperature range for growing goji berries?
Goji berries thrive in temperatures between 65°F to 85°F (18°C to 29°C) and are hardy in USDA zones 5-9, tolerating temperatures down to 0°F (-18°C).
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