Well if you need it, sometimes you have to get it yourself. I have been playing for many years, as have many, we all know that sometimes there are time sinks we all have to go through to get what we want or need.
When you are in the middle of a rush order and the roots you need are unacceptably expensive, put on your JBoots and go get 'em.
I remember lots of days when I had to go in the middle of the rush order to harvest more materials. It's kinda why I get all mine ponies and plants now. Lol