Problems planting on specific block

Hello there!

I am developing a mod inspired on Growable Ores by B0bGary's. Unfortunately, that mod stopped its developing in 1.7.10. I decided to make that mod again being very similar to the original with minor changes and a full redo for all the textures in 1.12.2. MCreator allowed me to make something very similar.

As you can see, the ore reed (diamond reed in that screenshot) is working. I also managed myself to get a seed-like item working to plant the reed block as a plant via procedures. It worked as intented.

Everything worked as expected, allowing the player to plant a lot of ore reeds together to watch them grow, just as the original mod. Anyway, there was somehing missing. B0bGary's Growable Ores has a method to make its mechanics fair and fun; you can only plant ore reeds on one specific block, and that block must be crafted with expensive items. So, I researched more about procedures to create a special block where my reeds will be planted.

I just made an specific block. Also, I made the mod again from zero with a whole new theme very different to the original, besides, I just added a ton of funny things I think you are going to love (this is going to be revelaed when Alpha were released). Anyway, I just encoutered myself with a pair of problems breaking the mod. The specific block for planting is working; you can only plant the seed-like item in those black blocks, but the problem begins here.

As you can see, if you leave the plant block even with nothing touching them, they will drop out themselves. Also, if you try to plant two or more together, or one over another, all of them will drop out too. This two issues make the mod impossible to use as intended. It is totally broken. Any help will be very appreciated. Here is my procedure, if it helps.

One last thing. This mod actually works only with vanilla items. I tried to include the most used mod materials (copper, tin, aluminium, silver, everything from EnderIO, Tinker's Construct, etc) but i can't set the Ore Dictionary IDs because of MCreator names everything like mcreator_whateveryourmodincludes.block and I have no idea about how to add an Ore Dictionary via coding. This is just an extra feature I want to add in the future. For now, I just want to fix the drop out seeds issue. 

Thank you everyone!