Japanese Cedar, Sugi (cryptomeria japonica)
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£1.25
£1.25 - £12.50
per item
Seed Prices
1 gram (approx 310 seeds) £1.25
2 grams (approx 620 seeds) £1.85
5 grams (approx 1550 seeds) £2.50
10 grams (approx 3100 seeds) £4.00
25 grams (approx 7750 seeds) £7.25
50 grams (approx 15500 seeds) £12.50
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A native tree of central and southern Japan the Japanese Cedar naturally grows in forests on deep, well-drained soils in warm, moist conditions. It is fast-growing under these conditions. It is a very distinctive ornamental tree with very aromatic needles that deserves to be more widely planted.
Adaptable to most soil types and pH ranges and grows best in moist soil. It is intolerant of poor soils and cold, dry climates. It cannot grow in the shade. Stands well in strong winds and can be used in shelter belt plantings. It cannot however tolerate maritime exposure.
Unlike most conifers, this species can be coppiced.
Adaptable to most soil types and pH ranges and grows best in moist soil. It is intolerant of poor soils and cold, dry climates. It cannot grow in the shade. Stands well in strong winds and can be used in shelter belt plantings. It cannot however tolerate maritime exposure.
Unlike most conifers, this species can be coppiced.
Germination, Sowing and After Care Information for
Japanese Cedar (crytomeria japonica)
Japanese Cedar seeds are relatively easy to germinate and grow. The dormancy within the seed is short and easily broken. This is achieved by a short period of cold stratification in the fridge.
First soak the seeds in water for 24 hours. Fully drain away all of the water and place the seeds in a zip-lock freezer bag. Place the seeds in the fridge, it is important that during this period that the seeds do not dry out or are waterlogged otherwise the pre-treatment will be ineffective. It is important to keep checking the seeds every week or so to make sure that they are not drying out. You could also at the start of treatment incorporate a little damp vermiculite or perlite, this helps to keep the seeds moist but not waterlogged.
After between 4 and 6 weeks under these conditions the seeds are ready to be sown. In general, many seeds will fail to germinate unless treated in this way, simply sowing untreated seeds in compost at room temperature will not break down the dormancy and germination may be disappointing.
Fill your chosen container with a good quality general potting compost. Suitable containers could be plant pots, seed trays or plug trays or even improvised containers with drainage holes. Firm the compost gently and sow the seeds on the surface. If you are sowing in plug trays, sow 2 or 3 seeds per cell.
Cover the seeds with a couple of millimeters of vermiculite or failing that a fine layer of sieved compost. Follow with a gentle watering and keep them at room temperature. Germination will begin within a few weeks of sowing.
The seedlings are reasonably robust and trouble free and usually grow to a height of between 5 and 10 cm in the first growing season depending on the sowing date and cultural techniques.
Developing seedlings should be fine in full sun, keep them well watered and free of competing weeds. Growth will accelerate in the second and subsequent years and the developing young trees should be re-potted as necessary preferably during the dormant season. After perhaps 2 or 3 years they are ready to be planted in their permanent position
First soak the seeds in water for 24 hours. Fully drain away all of the water and place the seeds in a zip-lock freezer bag. Place the seeds in the fridge, it is important that during this period that the seeds do not dry out or are waterlogged otherwise the pre-treatment will be ineffective. It is important to keep checking the seeds every week or so to make sure that they are not drying out. You could also at the start of treatment incorporate a little damp vermiculite or perlite, this helps to keep the seeds moist but not waterlogged.
After between 4 and 6 weeks under these conditions the seeds are ready to be sown. In general, many seeds will fail to germinate unless treated in this way, simply sowing untreated seeds in compost at room temperature will not break down the dormancy and germination may be disappointing.
Fill your chosen container with a good quality general potting compost. Suitable containers could be plant pots, seed trays or plug trays or even improvised containers with drainage holes. Firm the compost gently and sow the seeds on the surface. If you are sowing in plug trays, sow 2 or 3 seeds per cell.
Cover the seeds with a couple of millimeters of vermiculite or failing that a fine layer of sieved compost. Follow with a gentle watering and keep them at room temperature. Germination will begin within a few weeks of sowing.
The seedlings are reasonably robust and trouble free and usually grow to a height of between 5 and 10 cm in the first growing season depending on the sowing date and cultural techniques.
Developing seedlings should be fine in full sun, keep them well watered and free of competing weeds. Growth will accelerate in the second and subsequent years and the developing young trees should be re-potted as necessary preferably during the dormant season. After perhaps 2 or 3 years they are ready to be planted in their permanent position
