noun Plant Pathology.
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Origin of black knot
Words nearby black knot
Example sentences from the Web for black knot
The fungus is also related to the black-knot fungus on the plum, but its life-history is not yet known.
The branches are very liable to disfigurement by the black-knot and the foliage by the tent-caterpillar.Handbook of the Trees of New England|Lorin Low Dame
Happily, black-knot may be controlled by cutting out the diseased wood.The Cherries of New York|U. P. Hedrick