A lemon and an orange two years ago completely defoliated due to an excess of insecticide, they recovered well and now have a nice leaf stage of a couple of meters. After having fertilized them frequently, they still do not produce fruit. Will they be bastardized? Can I prune the longer branches in March or later? Nicola
Dear Nicola, thank you for contacting the experts of our website through the "questions and answers" section. Regarding the problem of defoliation of your lemon, to know if it will return to produce fruit after the trauma suffered due to the excess of insecticide, you will have to observe very carefully if the leaves are emitted above or below the graft of the plant. If your lemon has returned to emit leaves above the graft, the plain will surely return to producing fruit and it is only a matter of time. On the other hand, in the event that the plant has started to produce leaves again under the area affected by the grafting, this will not return to produce fruit and the best thing to do, if you want to get fruit, will be uprooting the lemon and planting a new specimen.
Finally, as far as pruning is concerned, March is certainly a perfect time to do this. To prune a plant like lemon it is in fact necessary to wait until the coldest period of winter has definitively passed so that the frost can no longer settle inside the branches causing severe damage and freezing to the plant.