Refills fertilize roses and flowering shrubs at the root level
Fertilizer Refills help keep your flowering shrubs healthy all season long! 15-25-10 N-P-K rating. 12 units per pack.
For new trees, use 1 refill cartridge for every 2 feet of tree diameter.
For established trees, use 2 cartridges for every 1 inch of trunk diameter.
NOTE: ROSS Root Feeder (Item # , sold separately).
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