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Recipe for lime sulfur

A combination of hydrate lime (CaO) mixed with sulfur. Lime sulfur
is extremely water soluble, but incompatible with other pesticides
due to it’s alkaline reaction when diluted with water. It should be
used by itself.

Lime sulfur can be made by combining 20 pounds of rock lime and 15
pounds of flowers of sulfur with 50 gallons of water. Place in a
large iron kettle or boiler outside (this stuff smells!) and boil
for one hour. Allow to cool and settle. The clear, amber fluid
remaining after filtering is lime sulfur. It’s probably cheaper and
easier to purchase a prepared product. This stuff is a pretty plant
fungicide .

My comments; The “recipe” may be a little confusing … I take rock
lime to be calcium carbonate (CaCO3 ) Kilned lime or burnt lime
will be calcium oxide ( CaO ) which becomes slaked lime - calcium
hydroxide - hydrated lime (CaOH) when mixed with water. I don’t
see any “magic” in the chemistry although I would be most likely use
a burnt or kilned lime which is more alkaline. All components
available either at a garden supply or in the concrete materials
area for the hydrated lime. A 50 # sack is about $4.50. Excesses
can go thinly on the lawn or garden especially east of the
Missisippi river in the US. DO NOT ACIDIFY as this makes hydrogen
sulfide (H2S) Rotten egg smell. This is a toxic gas.

Like everything be careful. And the Recipe is scalable - a batch
doesn’t have to be that big!


a possible source:

lime sulfur recipe:


The lime sulfur recipe sounds like WORK! Will the Lime Sulfur liquid
"dip" sold for veterinary purposes work for jewelry?


It is nasty smelling WORK! If you own a fruit orchard it is what you
may have to do. Scaled down it is just something you do if you want
to. I would certainly try the animal dip. check the MSDS for the dip
to see what else what may be in it first.