Q.Will Avocado Destroy Tomato
I was going to tie a dead avocado plant branch to the tomatoes. I planted tomatoes, and they germinated to about two to three inches, but then died. The pot was ten inches at the top. The soil was from outside of my house and was rich. I even put Miracle Grow in it to start the plant. I now have some vine tomatoes starting and pulled out the avocado stem; however, I have lost some already. They are about two inches in growth.
Certified GKH Gardening Expert
It was not the avocado. It was most likely a fungus called damping off. This article will explain more: https://www.gardeningknowhow.com/garden-how-to/seeds/what-is-damping-off.htm