Richard,

While that doesn't look impaired, even a blind squirrel finds a nut sometimes. I suggest it's best via the soil, although it certainly can be absorbed via the epidermis.

I use ferts at 1/4 strength. Especially in the summer, I just pour it over the whole plant. Inside in the winter, I have to be more aware of making a mess, so I aim more for the soil. I've never noticed a difference with growth.

I fertilize the roots/soil, and if I splash any fertilizer on the plant, I like to give it a quick rinse.

Josh

Good morning to all, And a very good question that I've ask myself. I have to be honest I've done both depending on if I was in a hurry or not. The question always left me thinking, Am I trying to benefit the root system 0r the plant 0r both Lol..

It's almost like eating your food: I've seen some people eat all their french fries 1st then they eat their Hamburger next right after and I think, Man it taste soo good all mixed together.

A little silly but food for thought, After all it all goes to the same place.

Greg