Q.Northern Trees
In general, when does sap start to run and is that a good time to fertilize them? Thanks for your help.
Rosa
AnnsGreeneHaus
Answered on February 11, 2013
As the weather warms, sap in trees "runs". The best time to fertilize is when new growth is visible. Depending on the variety of plant, new growth will be leaves and/or blooms. Just as there are "morning" people and "evening" people, some plants leave dormancy sooner than others.
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