Max, I think you're right to use organic fertilizer. I buy mine in bulk from the local co-op for under one dollar per pound. Although I don't do hard-core bonsai, I have a lot of little trees in pots. They do very well in a mix of sand and an organic starter media, also purchased from our local food co-op. I stir in a little of our home-grown compost when we have any left-over from the veggie garden.
Max, I think you're right to use organic fertilizer. I buy mine in bulk from the local co-op for under one dollar per pound. Although I don't do hard-core bonsai, I have a lot of little trees in pots. They do very well in a mix of sand and an organic starter media, also purchased from our local food co-op. I stir in a little of our home-grown compost when we have any left-over from the veggie garden.
I have the brain of an imbecile, so I love reading text with lotsa pictures, like this one. This was great Max, learned a lot.