Last Winter here in Arkansas I put my Meyer's out in the greenhouse too soon and needless to say things did not go so well. I got my first buds of this year about a week ago as the weather turned cold. I have read about getting citrus specific fertilizer to boost growth. I bought the Vigoro citrus spikes, but the things are huge and my trees died back and are only 1' - 2' tall. Is there anything smaller or should I chop these up? I bought these over the miracle grow, because they had more minerals listed on the package. Link to the spikes, http://www.vigoro.com/ProductCategories/PlantFood/VigoroFruitCitrusFertilizerSpikes/ Thank you in advance. Edit, they are in pots.