misterisse said:Don't get me wrong, I am super glad for the results i've got with my monstera!
I'm just curious what might have caused my monstera to keep it's age 
And what one could do to cause or prevent that a plant keeps it's age.
Cutting grown plants will always retain the chronological age of the mother plant. That said, juvenile foliage versus mature foliage of aroids doesn't necessarily correspond directly with the chronological age of the plant. Many philodendrons, monsteras, and other climbing aroids maintain their juvenile foliage while scrambling around looking for something to climb and can be maintained indefinitely of not allowed to do so. But once they attached to something and get going vertical, look out! You'll see some fantastic transformations! Believe it or not, your Monstera is still in the juvenile foliage phase. It will likely maintain that - possibly developing some more maturity with age. But unless it is given something large to attach itself to and get going skyward, it will not develop the true monstrously large mature foliage that Monstera deliciosa can develop.
Attached is mine that is growing up our big oak tree in out back yard. It's probably over 6 feet tall and going strong. The largest leaves are probably somewhere around 3 feet wide. This plant was only slightly larger than yours when I planted it here about 4 years ago or so.
