China Satsuma S-6

$34.99

China S-6 is a cold-selected satsuma mandarin valued for its high fruit quality, dependable sweetness, and exceptional resilience compared to most mandarins.

  • High-quality satsuma mandarin with excellent fresh-eating flavor.
  • Selected from freeze-surviving trees in China.
  • More cold tolerant than many mandarins once established.
  • Compact, manageable tree well suited to containers.
  • Self-fertile.
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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.

Planting & Care

At a Glance – China S-6 Satsuma Mandarin

  • Sun: 3/4 day to full day of sun
  • Soil: Well-drained soil is essential
  • Water: Moderate; consistent during establishment
  • Tree Size: Compact (easily maintained with pruning)
  • Pollination: Self-fertile
  • Harvest: Late fall
  • Hardiness: Mature trees tolerate temperatures to ~15°F

Planting & Care – China S-6 Satsuma Mandarin

Site Selection

  • Choose the sunniest available location to support late-season ripening and strong cold hardening.
  • Good air movement helps reduce pest and disease pressure, especially in humid or coastal climates.
  • Avoid low areas where cold air and excess moisture collect.

Soil Preparation

  • Drainage is the #1 make-or-break factor—satsumas do not tolerate wet feet.
  • If your soil stays wet after rain, plant on a mound/raised bed or grow in a container with excellent drainage.
  • Citrus prefers slightly acidic soil; in high-pH soils, nutrient lockout (especially iron) is a common issue.

Planting Instructions

  1. Dig a hole about twice the width of the root ball.
  2. Plant so the root flare sits at or slightly above finished soil level.
  3. Backfill with native soil and water thoroughly to settle.
  4. Mulch 2–3″ deep, keeping mulch several inches away from the trunk.

Watering

  • For the first 1–2 years, keep soil consistently moist but never saturated.
  • Deep water, then let the surface begin to dry—citrus dislikes constant soggy soil.
  • Check soil 4–6″ down; if it feels dry at that depth, it’s time to water again.
  • Once established, deep watering every 7–14 days during dry weather is typical, more often in very sandy soil or heat/wind.

Fertilizing

  • Citrus is a heavy feeder, especially for nitrogen—steady nutrition drives healthy leaf color, flowering, and fruit size.
  • Use a citrus fertilizer and follow the label rate for tree age/size; split applications are typically more effective than one large dose.
  • A solid home-grower schedule is 2–3 feedings during active growth: late winter/early spring, late spring, and early summer.
  • Container citrus often performs best with lighter, more frequent feedings, since nutrients leach out with regular watering.
  • Avoid heavy nitrogen late in the season—late growth is more frost-tender and can reduce cold readiness.

Cold Protection

  • Young trees benefit from protection during their first few winters.
  • Mature, well-hardened trees tolerate temperatures down to approximately 15°F.
  • Cold performance improves with full sun, good drainage, and avoiding late-season nitrogen that delays hardening.

Pruning

  • Minimal pruning is needed—remove dead, damaged, or crossing branches.
  • Light shaping after harvest helps maintain airflow and a compact form.

Harvest & Use

  • Harvest when fruit is fully colored and sweet.
  • Classic satsuma texture: tender, easy eating, and great for fresh snacking.

General Tips

  • Drainage problems are the most common cause of failure—when in doubt, plant higher or use a container.
  • If leaves yellow with green veins in high-pH soils, address iron/micronutrients rather than adding more nitrogen.
  • Consistent care in the first two years sets the foundation for long-term production and cold resilience.