I have been growing giant pumpkins for awhile now and after my first year I was hooked I had an amazing time growing them and they made an awesome addition to my Halloween décor for many reasons. First of all it’s just incredible that something can get that big. I am just amazed you can grow a 500 pound pumpkin from a relatively small seed. Secondly I can pretty much guarantee that no one else in your neighborhood will have anything close. I don’t think we had one trick or treater not make a comment or take a picture. Also it gives you some insurance against would be pumpkin smashers cause they are impossible to lift on your own. Lastly the sheer size of the Jack o Lantern when you carve it allows you to do some cool things, more on that later. So put in a little work this summer and you will have the biggest jack-o-lantern on the block.
Now you can get really crazy with this or keep it very simple. My first year I did not use all the different fertilizers i will talk about here and I grew a nice 275 pound pumpkin. After that I started doing more research found a fertilizer program i liked and the following year I grew a 520 pounder and I am no where near as involved as some people. So it’s up to you but in this instructable I will show you what I have done to consistently grow 400-600 pound pumpkins.
There are a lot of places online to get supplies, I have been using www.hollandsgiants.com and they have been great. You can get everything you need there and much of the fertilizer program that I use is taken from the one that they have designed and have available on their site.