Miracle grow won't kill your plants unless you are over-fertilizing. It's not the best nutrient out there, but won't kill a plant if used correctly. Aren't your plants seedlings? They do not need much fertilizer right now. The clay soil will kill them, not the miracle grow.

Kevin Benoit Zone 4b so I see no oak looks like northern Maine where nothing seems to grow and it caribou territory HOWARD

Howard. These are articles on how to get more from a cirrus tree. While this was done on kumquats, the same process could be done on lemons to achieve your needs. https://www.researchgate.net/publication/335895525_The_Confirmation_of_a_Ploidy_Periclinal_Chimera_of_the_Meiwa_Kumquat_Fortunella_crassifolia_Swingle_Induced_by_Colchicine_Treatment_to_Nucellar_Embryos_and_Its_Morphological_Characteristics https://www.sciencedirect.com/science/article/abs/pii/S0304423818307106

Ponicirusguy6b542xx Can I use a bread bag as a plastic film to get my new lemon seed started