Lime sulfur winter spray, how do you do it?

james

Shohin
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Fall has come, winter around the corner. All leaves off deciduous trees. About that time for dormant winter spray. I have chosen lime sulfur, which is hard to get these days. My intent is disease control, particularly trying to limit spring/summer

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I went with 40:1 water:lime sulfur (29% calcium polusulfide). This is what I understand to be safe for conifer. I am aware others use 20:1 for deciduous without leaves.

What are your experiences? Do you do this seasonally? Take wire off deciduous? What about cut back, do before or after spray? Can dormant spray injure recent cuts? Have you seen damage to conifer foliage, or deciduous buds? Do you protect, or spray the soil? Do you like or dislike the whitening effect on trunk, branches?
 

Shogun610

Omono
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Do you cover the pots before you spray? And how do you measure the dilution in that spray bottle ? I have one similar and was thinking about using like sulfur for dormancy as well.
 

Brian Van Fleet

Pretty Fly for a Bonsai Guy
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Have you seen Scott’s great series on this?


I have diluted about 1.25 oz/gallon, and sprayed trees on a sunny day just after leaf drop in the past. Pretty sure that’s when they do it in Japan. Best to cover pots, or wipe them off before the LS dries. Scott’s article suggests waiting later, just as buds are swelling. Maybe it can be done twice.
 
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