Avocado contains an enzyme that turns flesh brown when cut.
18+ Why Are My Avocado Leaves Turning Brown. I wondered if anybody might be able to help me identify the problem with my avocado plant. Excessive tip burn and brown leaves may end up in fewer flowers, meaningless fruit.
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Some avocado leaves are toxic, so you need to be sure of the type you have. So why does this happen? Once cut, avocado is exposed to oxygen which makes it turn brown.
And there is some yellowing too.
Salts in the water and in fertilizer build up over time. The tips of the leaves on my mexican avocado are turning brown (it seems to be moving up the plant). Never let your houseplant sit in standing. Something that actually works to keep avocados from turning brown!
