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The first time ever my avocado seed grew a root so when it got really long I planted it and then nothing and I thought I had killed it so while in the dirt I broke off part of the seed just to find out it is fine and green so just wondering is it ok with half a seed?Thanks Karen.

  • While life often finds away, I believe this would not be ideal and greatly reduces the chance of the plant fully germinating - you may be better off trying to grow another one from seed. Some tips - It can take a LONG time to start growing (sometimes months) - keeping the seed emersed in water in a warm (24c + environment) can help. Sometimes "scarring the seed" can help, eg by sanding off some of the skin or soaking in dilute Hydrogen peroxide can also stimulate growth. Don't transplant the seed until the plant has a 15cm long stem and leaves - again, this can take a long time. – davidgo Jul 10 '16 at 22:15
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There are two versions of “is it OK?” First, is it ever possible? That depends on what part of the seed remains. A non-compound seed like avocado has only one epicotyl, or embryo plant. If what’s left lacks an epicotyl, the seed can never sprout. On an avocado, the epicotyl looks like the tip of a tube, and depending on the stage of the seed’s maturity may even include tiny yellow/white leaves. There’s a drawing of the inside of an avocado seed at http://www.inspiredbymygarden.com/germination-of-seeds/.

Second, how good an idea is it to use part of a seed, even if it might be possible? Not very. Most of content of an avocado seed, or of most of the grains and other seeds we eat, is starch. It is food for the baby plant until the new plant has roots and leaves to feed itself. You’re starting your plant on a starvation diet. It may or may not survive.

Recommendation: Eat another one of those delicious fruits and start with a whole seed!

  • P.S. Simply because the inside of a particular seed, in this case avocado, is chemically a starch doesn't make it safe food for humans. Just so there are no misunderstandings! Don't eat avocado seeds. – InColorado Apr 9 at 2:40
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My first avocado seed also broke when I planted it. However, I did wait until it was 2-3 inches tall and had a long root before I put it in soil. I planted it in soil that was made for propagating seedlings as well. In addition, I placed the broken half of the seed as close to its original position as I could. I'm not sure if that helped, but it's been over a year and my avocado plant is still growing strong. Looking much more like a mini tree now.

So yeah, my advice would be to keep that one growing, and start a backup seedling just in case :) You need two avocado plants in order for them to actually produce fruit anyways.

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