POTASH WASH. 121 
an unhealthy condition, besides affording a covering 
for its insect enemies. "When the bark is kept clean 
and smooth, they are forced to find shelter else- 
where. 
For many years we have used a wash made by 
dissolving one pound of caustic potash in one gallon 
of water. This is applied to the trees with a brush, 
in the latter part of March or any time in April, be- 
fore the trees come into leaf. Two applications of 
this solution will cleanse the bark thoroughly. On 
large and old trees that have been neglected, it is 
better to scrape the bark before applying the wash. 
There is no great amount of time required for the 
operation ; one man, with a pail and brush, can wash 
the bodies and some of the main branches of from 
150 to 200 treesinaday. One application in April 
will effectually remove the aphis or bark louse. 
Care should be exercised in washing the trees, not to 
touch the young buds or twigs, as it may kill them. 
We have also used the “soda wash,” made by 
dissolving one pound of caustic soda in one gallon 
of water. This is less powerful than the potash 
wash. It may be applied to any part of the fruit 
trees without injury to the young buds. Both of 
these washes are excellent for cleansing the bark of 
all kinds of fruit trees. Whitewash is sometimes 
used as a wash on fruit trees. It is better under all 
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