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northwoodswis

Sulfur lime oil spray on pear and apricot trees

northwoodswis
14 years ago

I have been doing a lot of research on dormant oil sprays. Several sources say to never use sulfur on apricot trees, as it can harm them. Other sources say to use it on them. Some sources say to spray dormant pear trees with oil lime sulfur spray when dormant. The Bonide brand gives the proportions of the spray to mix for pear trees. Another source says never to use lime sulfur spray on pear trees, as it is toxic to them. From what I understand, if used as separate sprays, you have to wait several weeks after using lime sulfur before using oil, but you can also mix them or use a premade mix (although the Bonide oil lime sulfur spray doesn't seem to be available any more.) So what are your experiences with this? Anyone ever have it harm their trees? Also would it be redundant to use both copper spray (on apples, pears, cherries, plums, apricots) and then two weeks later, oil lime sulfur spray? Finally, does one need to tarp over daylilies to avoid contact with sprays if they are near the trees, but are covered with mulch and have no growth showing yet? Thanks for your input. Northwoodswis

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