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CERCIDIPHYLLUM japonicum

Katsura Tree

Stock: Out Of Stock

Family: Cercidiphyllaceae

Characteristics: Deciduous tree 12-18 m

Seeds per packets: 50

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Grown for its beautiful shape and its attractive round-oval leaves 10 cm (4") long resemble those of a small redbud.
The leaves emerge reddish purple in spring, mature to medium green with a slight bluish in summer and turn quality shades of gold, orange and red in autumn.

Native to Japan.

Prefers a rich moist soil in an open sunny position, drought and frost tolerant.

Although seed can be sown most of the year in Australia seed is generally best sown in spring or autumn, avoid the coldest and hottest months of the year. The optimum germination temperature for germination is around 16-22°C

Cold stratification is recommended.
Cold treatment may not be critical for germination to occur in colder regions but should give increased germination rates.

This can be replicated by cold stratification in the refrigerator for 7-10 days.
Alternatively over wintering in the garden in cold climates will assist germination.

  1. Soak in water overnight.
  2. Sow seed on the surface and cover lightly. Do not bury deeply.
  3. Water with fine mist spray to avoid disturbance of the seed.
  4. Ensure the mix is moist but not water logged.
  5. Place the container in plastic bag.
  6. Place the bagged container in the refrigerator for 7-10 days.
  7. Germination generally occurs in 14-28 days when moved to warmer temperatures after the period of cold treatment.

General note: Seeds of many natives are dormant and require specific conditions or pre-treatment for germination.
Do not be too hasty to discard seed that does not germinate, seeds will often lay dormant until the conditions are similar to their natural requirements for germination to occur. Containers put to one side will often surprise long after they were discarded.

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