Troubleshooting
Dwarf Hinoki Cypress problems — and how to fix them
Dwarf Hinoki Cypress (Chamaecyparis obtusa 'Nana Gracilis') is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Phytophthora root rot
Waterlogged soils invite Phytophthora cinnamomi, causing wilting, yellowing, and dieback from the base. Plant on a slope or in raised beds; there is no cure once the disease is established — prevention through drainage is essential.
Spider mites in hot, dry conditions
Fine webbing and stippled, bronzed foliage in midsummer indicates spider mites (Tetranychus urticae); they thrive when plants are drought-stressed. Increase watering, spray foliage with water to dislodge mites, and treat with an appropriate miticide if severe.
Prevent dwarf hinoki cypress problems before they start
Most dwarf hinoki cypress issues are care-mismatch, not bad luck. Dial in the basics:
Dwarf Hinoki Cypress problems — FAQ
Why is my dwarf hinoki cypress phytophthora root rot?
Waterlogged soils invite Phytophthora cinnamomi, causing wilting, yellowing, and dieback from the base. Plant on a slope or in raised beds; there is no cure once the disease is established — prevention through drainage is essential.
Why is my dwarf hinoki cypress spider mites in hot, dry conditions?
Fine webbing and stippled, bronzed foliage in midsummer indicates spider mites (Tetranychus urticae); they thrive when plants are drought-stressed. Increase watering, spray foliage with water to dislodge mites, and treat with an appropriate miticide if severe.