![]() The health, species of the tree and the environmental conditions will determine the rate of uptake. Trees in advanced stages of insect infestation may not respond to treatment. For narrow-leaved evergreen trees such as pine, spruce, or hemlock, use the 6 mL capsules at 4-inch circumference spacing (DBH divided by 1.3). The following dosage, per capsule, depends on tree diameter:ĦmL capsules – narrow-leaved evergreen trees.įor heavier infestation and/or more persistent insects, use 4 mL capsules on all tree sizes. If the number of capsules results in a fraction, round down to the lower whole number. If measuring the diameter at breast height (DBH), divide this number by 2 (two) to determine the number of capsules needed. If measuring the circumference, divide this number by six (6) to determine the number of capsules needed. Measure the tree at breast height in inches.
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