Description
China S-6 is a satsuma mandarin selection valued for both fruit quality and cold resilience. It traces its origin to survivor trees identified after a severe freeze event in China, where only the hardiest individuals persisted—making S-6 a standout among satsumas for growers seeking added margin against cold damage.
The fruit ripens with the classic satsuma profile: tender flesh, balanced sweetness, and easy eating. While satsumas are already among the more cold-tolerant mandarins, China S-6 distinguishes itself through its combination of dependable productivity, clean flavor, and proven selection history.
Overview
- High-quality satsuma mandarin with reliable sweetness.
- Selected from trees that survived a major freeze event in China.
- More cold tolerant than many mandarin varieties.
- Compact growth habit suitable for containers or small gardens.
- Self-fertile.
Growing Details
Latin Name: Citrus unshiu ’China S-6’
Site and Soil: Full sun; well-drained soil
Rootstock: 1-gallon trees on Flying Dragon; larger sizes on C-35
Hardiness: Among the more cold-tolerant satsumas; mature, well-hardened trees can tolerate temperatures down to approximately 15°F
Bearing Age: 2–4 years
Size at Maturity:
• Flying Dragon: Typically 6–8 ft tall and wide
• C-35: Typically 10–12 ft tall and wide
Note: Trees grown in containers remain smaller and are easily maintained with pruning.
Bloom Time: Spring
Ripening Time: Mid-season for satsumas; typically late fall
Pollination Requirements: Self-fertile
Pests & Diseases: Similar to other citrus; benefits from good airflow and drainage
Additional Notes
- Grower’s Insight: China S-6 originates from satsuma trees selected after surviving a major freeze event in China—making it a thoughtful choice for growers prioritizing resilience alongside fruit quality.
- Regional Insight: Well suited to mild-winter regions and container culture in cooler climates where satsumas are grown with seasonal protection.



