I did a mistake with my lawn/grass please help!!!!!

Question

Ive planted marathon grass about 5 years ago and my neighbor has st augustine grass and currently my grass now is halfway filled with marathon grass coming from his lawn and half of my other side if with pure marathon grass long and green but it is very weird all the grass on my lawn is like different like 3 different types how can i make all the grass on my lawn grow at the same exact time and same height and which would be the better grass to be be grown

oh and i have currently fertilized my grass with 15-5-7 numbers and

a weed killer

how long till i see results????

plz help????

Answer 1

You can't make them grow similar..they are 3 different varieties of grass and will grow as they were genetically designed too..alll you can do is mow as needed for the heigth..

Answer 2

You should see results within a day or two but it will take a few weeks to kill the weeds to the root.  

The best thing to do would be to re plant with St Augustine so you don't end up mixing grasses with your neibor.  That way when the grass spreds it will be all one type because I'm sure your marathon is spreading into his/her St Augustine and their St Augustine is spreading into your marathon.