Description
Crataegus pinnatifida, commonly known as Chinese hawthorn, is a deciduous shrub or small tree native to East Asia. Unlike many other hawthorn species, it is known for having few, if any, thorns, and its larger, more open growth habit. The tree produces bright red fruits called “haws” that are significantly larger than those of other hawthorns, sometimes resembling small crabapples. These fruits, which have a pleasant, sweet and sour flavor, are highly valued in Chinese cuisine.
Each haw contains several hard seeds, which are challenging to germinate. For successful propagation, the seeds require a prolonged period of both warm and cold stratification to break their natural dormancy.
Germination Guide
🌍 Northeastern Asia, including China, Mongolia, and the Russian Far East
Difficult
Crataegus pinnatifida, known as Chinese Hawthorn, is a deciduous tree native to northeastern Asia, valued for its edible bright red fruits and traditional medicinal uses. This species exhibits double dormancy, requiring a prolonged sequence of warm and cold stratification over several months to achieve satisfactory germination. Seeds are typically slow and erratic to germinate, and patience is essential as germination may take several months to over a year.
Germination
Germination time
Expect germination in
30 – 120 days
Temperature
Min 15°C
Ideal 20°C
Max 22°C
🌡️ Temperature alternation recommended
— Requires warm-cold stratification sequence (warm at 15°C, then cold at 4°C). After stratification, maintain steady warmth around 20°C with adequate light but away from direct sunlight for germination.
Substrate moisture
💧💧 High
Seed Pre-treatment
-
💧
Soaking — 24 hours
Immerse in tepid water for 12-24 hours before sowing
-
🔨
Hot water scarification
Soak seeds in hot tap water and let stand for 2 days, or immerse in warm water for 24 hours then dry
-
❄️
Cold then warm stratification — 120 days at 15°C
-
📋
Additional notes
Double dormancy species requiring warm stratification at 15°C for 120 days (or 3 months), followed by cold stratification at 4°C (in refrigerator) for 120 days (or 3 months). Scarification before stratification may reduce germination time. Fermenting seeds in their own pulp for a few days may speed up the process.
Substrate & Container
Recommended substrate
Well-draining seed mix, peat moss, sand, or perlite-amended potting mix
Recommended container
Plastic pot with drainage holes or transparent container with light porous substrate, kept lightly closed to maintain humidity
Growing Tips
Sow seeds at 1/4 inch depth (approximately 0.6 cm) and tamp soil gently. Keep substrate consistently moist but not waterlogged. Maintain high humidity during stratification phases by using semi-moist peat moss or sand. Light mulching of seed bed aids moisture retention. Germination may be irregular; allow ungerminated seeds a second year. Alternatively, sow fresh seeds in autumn directly in a cold frame outdoors, allowing natural winter stratification. Once germinated, pot up seedlings individually for the first growing season. Protect young plants from extreme temperatures and ensure good air circulation to prevent damping-off disease.
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