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Devon from Arvada, Co writes

If I'm applying a root injection and my DBH is 11, am I really applying 55 gallons of Arbor Care 15 - 8 - 4 per tree?

Answer:

Root Injection rates for Arbor Care 15-8-4 are as follows:

Arbor Care should be injected into the top 4 in. to 8 in. inches of soil where feeder roots extend. Start application of fertilizer approximately 2-3 feet from tree trunk and extend the same distance beyond the drip line. A grid pattern should be laid out, and spacing should be every 2 1/2 ft to a depth of 4 in. to 8 in. A minimum of 5 gal. of tank mix (solution) should be applied per inch of tree diameter. Inject approximately 1/2 gal. of fertilizer solution at each point. Please see the label for complete application instructions.  You will use 89 oz to 2 gallons of Arbor Care per 100 gallons of solution. So if you need to make 55 gallons of finished solution, then you are using 49 oz of Arbor at the low rate and 140 oz of Arbor care at the highest rate.

Answer last updated on: 02/01/2021

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