HydroFlow™ 16" modules are perfect for new, or existing, smaller trees and shrubs, potted plants, medium-sized urns, and landscaped plantings with root depths 20 inches or less.

Recommended Usage: Three modules per tree or shrub evenly spaced triangularly around the tree trunk or plant stems. Always refer to your local arborist and landscape supply store for your type and quantity of granular fertilizer.

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