More about the world regions where giant sequoias have been planted successfully, can be found here. Lincoln, ON (zone 7a) Grew from seed five years ago. So, it looks like it took a little more than 2 weeks for the seeds to germinate – which is a week or two less than expected. I have seen sequoias only 1.5 m (5 feet) tall with an abundance of cones and trees up to 20 m (about 60 feet) tall, with no cones at all. You can sow them all year round, but because the plants in temperate regions like Europe will grow best in summer, it might be best to do the sowing in (early) spring. Also the variety 'Pendulum' is not very hard to find. Once in a while I see them in European garden shops with prices varying from 7 euro to 25 euro (8 to 30 dollars) for a tree 30 cm (1 ft) tall. Please go ahead and think about the next generations, that will hopefully be able to see this tree as a true giant. Giant sequoias are primarily used for shelter. When a seed germinates, the first thing you see is a tiny, rhubarb colored stem, loop shaped. How long does it take the seeds to germinate? The biggest cones also produce the biggest seeds. These giant trees may live to be 3,000 years old. But sequoia wood lacks strength and breaks easily across the grain. Where to get your seeds? Early loggers are said to have destroyed hundreds of ancient sequoias in search of wood for roof shingles, flumes, fence posts and poles. Grows in a pyramidal shape when young, shifting to a more columnar shape with age. The different horticultural varieties or cultivars are all propagated by grafting. Invest in the millennium. First you can buy them from nurseries/seed companies. A giant sequoia is not fit to plant as a small ornamental tree, but reaches its full potential as a landmark tree that can grown without restraints. Of course I knew that it would not be easy to grow a giant sequoia in Zone 5, so all is good. You see four seed leaves, although there can be three or five (like on the image below). Humidity is a key factor to the success of growing your seedlings. In contrast to the giant sequoia, these cuttings root easily to very easily. There are two ways to do that. As a kid, I considered sequoias as the giant trees from California and I would often recognize them in documentaries. Fallen green cones are also ideal to collect: when they open after a couple of weeks in a dry place, they are loaded with small, winged seeds. The name sequoia came from the Cherokee Chief Sequoyah, who was also famed for framing the alphabet of his Native American tongue. This might not come as a surprise but I have seen this tree planted very often in locations that were not well suited, as this species is a vigorous grower and can reach a height of 10 m (30 ft) after 10 years, and reaches a height of 30 m (100 ft) to 40 m (130 ft) after 50 years. At that time I ordered 1 oz of seeds, which was about 6,000 of them. The poet Wendell Berry said: “Ask the questions that have no answers. Nevertheless these species can be propagated best (and definately the dawn redwood) by making cuttings. The Coastal Redwood is vastly different than the Giant Sequoia in that the Giant Sequoias can handle most all of the USDA zones in comparison but I must caution that the Giant Sequoia is rather tender to prolonged cold when it is young, less than 12 years of age. One young tree in Italy reached 22 m (72 ft) tall and 88 cm (2.89 ft) trunk diameter in 17 years (Mitchell, 1972). Giant Sequoia Seedlings (Sequoiadendron giganteum) Currently, there are about 5 Giant Sequoia seedlings that are alive and well. For the Europeans amongst you, there are a number of good British or German nurseries that offer Sequoiadendron seeds (the tree is sometimes called Wellingtonia in British English and Mammutbaum in German). 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