changing block types of placed blocks

[Killua_Zold1ck]

so im trying to figure out how i want to do this since i have 0 knowledge of coding on this game but

is there a way to change a block (high fertility soil) - another block /replaceblock x y z (insert block name here) 
using mc as a reference but do all that automatically and how can i then have it detect whats nearby such as items placed by the player water/bone piles + time
to then change the block 
if you caught on im trying to have soils change automatically to a higher tier based on specific items in the environment/curated environment but if thats to difficult i might just do all this in barrels instead might be easier but if this is possible then do it this way

[Killua_Zold1ck]

sorry for the word vomit tl:dr i want to have blocks change over time/other factors

[Brady_The]

1 hour ago, Killua_Zold1ck said:

but if thats to difficult i might just do all this in barrels instead might be easier but if this is possible then do it this way

Technically there is "transitionableProps", but that's fairly limited in scope. In your specific case you would need code which would check if certain items are in the vicinity of the blocks you want to change.