Removing a Mature Forsythia Root Mass for New Plantings

30-year-old forsythia removed from 15×60 ft area. Dense fine roots remain. Homeowner wants to plant shrubs.

Options

Stump grinder + root chase: $8–$10/in diameter. Grind stump, then "chase" major roots. $80–$300 total.
Chemical (root rot): Drill ⅜ in holes in stump, pour concentrate. 1 year to rot.
DIY mechanical: Sharpened pickaxe/mattock to chop planting holes through root mat. Backfill with compost.

Grind stump, chop planting holes with pickaxe, mulch heavily. In a year, remaining roots decay. Plant shrubs now in chopped holes.

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