Growing Norfolk Island Pine Trees – Norfolk Island Pine Care Tips

Norfolk Island Pine Tree Height: How Tall Can They Grow?

The tallest tree on earth is the redwood tree at 1,000 feet tall. The tallest living trees are the oaks (Quercus virginiana) which grow up to 200 feet high. There are many other species of trees that have been grown to heights exceeding 100 feet but they do not qualify as true giants. Norfolk Island pine trees reach heights of over 100 feet. A few years ago a man named John Dickson planted a tree in his backyard on Norfolk Island, off the coast of Georgia. His tree grew so large that it was nearly impossible to walk around it! Even with all the support beams and supports placed around it, its roots were still reaching into the ground! He had no idea how big his tree would eventually become.

It took two decades before the tree reached 100 feet tall. At one time it was estimated that the tree could possibly reach 300 feet high. Nowadays, however, there is little doubt that it will never stop growing.

The only thing keeping it from being even taller than that is a combination of luck and good planning. The tree grows best when it receives plenty of sunlight during the day and shade at night. The tree has grown so large that it shades itself for most of the day. This fact, along with all the building that has occurred around it, has limited its ability to grow taller. John Dickson’s tree is one of the tallest trees in the world but it will probably never reach the heights that it might have otherwise.

How Big Are Norfolk Island Pines?

The Norfolk Island pine can grow to a remarkable height but its girth is not usually very wide. Although it has a thick “trunk,” it usually does not have many branches until it approaches the top. This fact, in combination with the fact that they usually grow on small islands, is what causes them to have a very straight vertical growth pattern. Some trees will lean towards the sun while others will bend away.

Sources & references used in this article:

Salinity damage to Norfolk Island Pines caused by surfactants. II. Effects of sea water and surfactant mixtures on the health of whole plants by HGM Dowden, MJ Lambert, R Truman – Functional Plant Biology, 1978 – CSIRO

Dieback of Norfolk Island pine in its natural environment by ML Benson – Australian Forestry, 1980 – Taylor & Francis

Salinity damage to Norfolk Island pines caused by surfactants. III. Evidence for stomatal penetration as the pathway of salt entry to leaves by AM Grieve, MG Pitman – Functional Plant Biology, 1978 – CSIRO

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