Here’s something you don’t see everyday. Two different people have contacted me about a tomato they each had that was sprouting seeds INSIDE the tomato. Both people said the tomatoes were older. When they cut into their tomatoes, they found tomato seeds prematurely sprouting inside. I haven’t seen that before and had to research it out.
It’s called Vivipary which means ‘live birth’. It is the phenomenon that involves seeds germinating prematurely while they are still inside the fruit, in this case tomatoes. It most often happens when the fruit is old. Normally the gel around the tomato seeds prevents the seed from germinating inside but it’s not limited to just tomatoes.
Read more at Gardening Know How: What Is Vivipary – Reasons For Seeds Germinating Prematurely https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/what-is-vivipary.htm