I think never.
stop being racist
Stop ruining there hbbitat ( the rainforest) Breed more in captivity stop poachers killing them for there tusks
Elephants don't have horns. You may have it confused with their beautiful white tusks that both males and females grow. If so, then they are known as tusks. They are actually teeth that grow out of the side of an elephant's mouth; and, in a perfect world, they never stop growing over an elephant's lifetime.
You could stop growing fat, but you won't stop growing bones or muscles. Elephants, giraffes, and gorillas eat no meat and they grow very large. There are many human bodybuilders and performance athletes who eat no meat.
Elephants are dangerous because they are large and very powerful and nothing can stop them except human technology and bullets. They break through fences and steal crops in the night, and can trample anything that gets in their way. Also, their tusks can impale you in a heartbeat. Elephants are very protective of their young and if they think you are a threat, they will attack you.
Because people continue to hunt and kill them for fun and their tusks are made of ivory which is highly saught after by many, all though it is now illegal to have. People don't know when to stop.
Usually in mammals tusks are enlarged canine teeth but in elephants they are actually elongated incisors. Tusks are essentially no different from other teeth. A third of the tusk is actually hidden from view, embedded deep into the elephant's head. This part of the tusk is a pulp cavity made up of tissue, blood and nerves. The visible, ivory part of the tusk is made of dentine with an outer layer of enamel. Elephant ivory is unique which when viewed in cross-section reveals criss-cross lines that form a series of diamond shapes. Elephants tusk never stop growing so some old bulls display enormous examples. However the average size of tusks has decreased over the past hundred years because hunting elephants for their ivory has resulted in the 'big tusk gene' becoming increasingly rare.
Penalise severely the hunting of elephants for ivory.
unlike humans, elephants never stop growing, so answering your question, it depends on how old the elephant is.
Elephants will grow throughout their life. Between the birth and age 20 is the fastest time a elephant will grow. After age 20 elephants grow much slower.
Ivory is so precious because it is now illegal to bring ivory into the Western countries. Ivory comes from the tusks of elephants and Western countries are trying to stop the over abundance of killing elephants just for their ivory tusks.
India and other neighboring countries have put a ban on hunting elephants for their tusks. Also, the sale of Ivory (elephant tusk) is a crime in most nations. Since ivory is the main reason why elephants were killed in thousands, the ban on ivory sale has actually helped reduce the number of poaching incidents in Africa and India. Still there is illegal sale of ivory in the black market and law enforcement authorities around the globe are trying to catch such criminals to help the elephants.