Giant Redwood, Wellingtonia (sequoiadendron giganteum)
0.25 gram (approx 49 seeds) £1.35
0.5 gram (approx 98 seeds) £1.80
1 gram (approx 196 seeds) £2.50
2 grams(approx 392 seeds) £4.00
5 grams (approx 980 seeds) £8.95
10 grams (approx 1960 seeds) £16.50
25 grams (approx 4900 seeds) £37.00
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Germination, sowing and After Care Information for
Giant Redwood/Wellingtonia (sequoiadendron giganteum)
To start with the seeds should first be soaked for 24 hours in clean water. Once the water has been drained off you need to cold stratify your seeds in the fridge for one month at around 4 Celsius. The soaked seeds need to be put in or on some type of non-soil growing medium such as a damp paper towel, rockwool or sterile sand or vermiculite. I find that vermiculite works well .
After placing your seeds in/on the moist substrate that you have chosen to use, you need to put them into a resealable plastic bag. Place the bag of seeds into the fridge and check them regularly to make sure the substrate remains damp but not saturated.
After 4 weeks, the seeds should be ready to sow and will need to be placed at around room temperature (21 Celsius/70 Fahrenheit for germination. You can choose to germinate the seeds in the bag and then transplant them into compost or you can plant them onto compost and wait for seedlings to appear. Cover the seeds with a thin layer of compost or vermiculite.
I find that covering the seed with a thin layer of vermiculite can give greater numbers of seedlings than covering with sand or compost. Do not bury them deeper than this as burying them too deep can ruin your chances of success.
Redwood seeds require a mineral-rich soil with good drainage. It is especially important that the seedlings do not get too wet as this makes them liable to damping off and other fungal diseases.
Do not water too much or too frequently. Allow the soil to dry out only a little between each watering.
Redwood seedlings will die very easily if the compost they are in dries out even once. Expose them to increasing light levels gradually. The seedlings also do not grow well in hot, humid conditions.
In the early summer, gradually harden off the seedlings and place them outside in a semi-shaded position. Grow them in a container for at least 2 years before planting them in a permanent position.