China Doll Tree Roots and Foundation Risk

Assessing Foundation Risk

Your China Doll (Radermachera sinica) has grown to two stories tall near your Melbourne home. While initially described as non-invasive, a YouTube video shows massive root systems 8+ meters from a Florida house, with Australian commenters confirming similar experiences.

Conflicting Information

• Early sources: Non-invasive, safe near foundations
• Video evidence: Extensive root systems causing structural concerns
• Your situation: Thriving with minimal water, cut back to stems, regrew vigorously

Decision Factors

Consider:

• Distance from foundation (you didn't specify exact distance)
• Soil type and moisture patterns
• Local Melbourne climate vs. Florida/Australia reports
• Tree's current vigor after severe pruning

Recommended Action

1. Watch the referenced video and read comments
2. Consult a local Australian arborist for region-specific advice
3. Consider root barrier installation if keeping the tree
4. Monitor for foundation cracks, plumbing issues, pavement lifting

Your husband's severe pruning stimulated vigorous regrowth—this species responds aggressively to cutting. The root system likely matches the canopy size. Given the conflicting data and your home's value, professional local assessment is worth the investment.