Bonide Sucker Punch - Manual (Page 6)

Use the product as supplied (undiluted) and follow the procedures
described below for treating sprouts on scaffold limbs, trunks and
rootstocks.
NON BEARING CITRUS
Remove unwanted sprouts and thoroughly coat surfaces and surrounding
bark.
SPROUTING FROM SCAFFOLD LIMBS
Remove trunk suckers and water sprouts and apply this product to the
entire trunk from ground line to scaffold limbs.
SPROUTING FROM TRUNK
Non bearing citrus rootstock which is healthy, vigorous and free from stress
may be treated. After planting apply this product from the ground line to the
first scaffold branches. Do not allow the product to puddle at the base of
the tree as injury and stand loss may occur. Do not apply to rootstock if the
bud union has not callused. In temperate zones where freezing may injure
scaffold branches, restrict treatment to the frost free period to allow for a
short period of growth between treatment and damaging freeze.
ROOTSTOCK