Chlorosis and Carambola
I am new and this is my first post, so please bear with me.
Earlier this April I managed to propagate some Carambola trees from seed. I have twelve of them and they are growing in 1 gallon containers filled with Miracle-GroÃ¯Â¿Â½ Cactus, Palm and Citrus Soil. For the last two or three months they have not been growing very much, most are suffering from some form of chlorosis. What I can't seem to figure out, is the cause of the chlorosis. I know that it is due to some deficiency in either Iron, Zinc, Manganese, or Magnesium, possibly a combination of these. I've treated them with a slow release fertilizer (Miracle-GroÃ¯Â¿Â½ Shake 'n FeedÃ¯Â¿Â½ Plus Moisture ControlÃ¯Â¿Â½ All Purpose Continuous Release Plant Food) in the hopes that it might give them some of the micronutrients they are lacking. It has only been a week, but it doesn't seem to be having much of an effect. I'm considering getting something that has more Iron and Magnesium, possibly a foliar.
Here are some photos of my plants; http://www.flickr.com/photos/humanenigma/sets/72157627549137725/
Any suggestions are welcome and would be much appreciated.