QuestionsHow to growTrees and ShrubsFeedingtoo early to use fertiliser? 0 Vote Up Vote Down Alan Stenson asked 15 years ago Is it too early to put fertiliser on plants/ trees mid march? 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago Spring is the time to put out fertilizer but most trees do not need it on good soil.