That is, from your experience, another good way to make long-lasting labels! Thanks for sharing, BK!
There are several reasons that I like the knives. But one of those reasons is that the knife slides easily down much deeper into the dirt than any blinds or strips I've used. They don't curl or twist, but just go straight down deep enough that they are not easily dug out by squirrels. Granted, a dog could certainly pull them all up. Or even a child. But mine stay put. That is really important to me when I am hybridizing, in particular.
The other reason I like the "clear" knives is because they are not as noticeable. I, personally, don't like white or other colors catching my eye when I am enjoying my garden. It is distracting and I personally don't find it very attractive. I can understand why commercial gardens or sellers use the nice metal markers with labels because they are selling their plants. But in a home garden, I like my plants and the area they are growing in to look as natural as possible. Anything clear is not as noticeable as something with color. The writing of the name of the plant is underground, so I don't see that either until I pull the knife up. For me it is also about the aesthetics of my garden. So that is why I really like the clear plastic knives. There are many ways you can create labels, this is just my way .... until something I like better comes along ....