Sometimes the stupidest idea can make you millions. That holds true it seems to me in the area of gardening since its such a extensive hobbie and source of food!
I have a patent in the fishing industry but its limited more than gardening which is a huge industry and the reason our nation is so prosporus! Farming made America and still does! If you have a idea always remember you will have those that will think you are nuts and be negative to what you plan on doing!
There are millions of new products in the horizon! Something that sold millions lately is the glass vase that gives water to plants slowly! A product that has sold millions in the last few years is the upside down tomato planter which seems stupid when you think about it but results count as you can see by my link here! Keep a open mind and don't pay attention to those who try to discourage you!