China - has survived and reached such great heights despite being repeatedly chopped down by homeowner Claire Williams, 45. She first noticed the leafy stems growing from a crack in the concrete late last year, and mistakenly thought it was a pumpkin seed left over from Halloween.It grew to taller than 3ft in as many weeks, so she chopped it down and thought nothing more until it sprouted back outside her London home in January.The Royal Empress Tree - the world's fastest growing tree - grew even faster, reaching the top of the kitchen window in a few weeks.A further chop did nothing to stop the green giant.Since January it has grown more than 14ft - reaching the upstairs window with foliage spreading out to cover nearly the entire front of.
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