If you like a shot or two of tequila, what's growing in this west Londoner's garden will send your head spinning.
The amateur gardener is the proud owner of a plant usually found in Mexico and used in the production of tequila.
The fitness consultant started this as a little experiment after a trip to Spain 15 years ago, where he had a small agave the size of his pinky finger.
Little did he know this small plant would turn into a "forest" of 45 plants taking over his garden.
Mr Hall, who claims the largest is a mammoth 6ft by 6ft, said: "Now I have a total of 45 plants from that one and some large enough that would need three people to move.
"I am one of few people in England to grow so many in such great condition even with the cold winter months."
The agave is an exotic plant which is difficult to grow in certain countries such as the UK due to the climate.
It is similar in appearance to Aloe leaves but the two are not closely related in the plant world.
Mr Hall added: "Agave are used in Mexico to make tequila. I see the agave as the ultimate plant as most gardeners tend to have same variety of plants as it's difficult to grow exotic plants in this country.
"I don't know much about gardening but have created a master piece with agave.
"Agave are also known as century plants as they have a sad ending but leave many little ones over the years. All of mine are from one plant."
Mr Hall hopes to sell some of the plants and give some of the proceeds to RNIB and Guide Dogs charities.
What is agave?
According to the Eden Project, agave is originally from Mexico but now grows across the world in similar growth conditions - a sunny and dry climate with well-drained soil (unusual for the UK then).
Sometimes referred to as the century plant, it is widely believe that agave only flower once every 100 years. But, as the Eden Project points out, this may not be completely accurate and they flower every 20-30 years.
"In Mexico drinks are made by cutting off the flower head and collecting the rising sap - as much as 1000 litres per plant!" says the Eden Project on its website. "The sap is then fermented into a drink called pulque, and can then be distilled to make the spirit mescal (a related plant, the blue agave, is used to produce tequila).
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