Spiny amaranth with Curculionidae? Rare but Treatable

Curculionidae on Spiny amaranth: What to Know?

Curculionidae on Spiny amaranth (Amaranthus spinosus) is a other condition with moderate severity. Spiny amaranth has low susceptibility to this disease. Curculionidae (weevils) are small beetles that feed on plants. Adults chew leaf margins, leaving crescent-shaped notches, primarily at night. The larvae live in the substrate and consume roots, causin...

Spiny amaranth is a easy-care plant.

Unlike most plants, Spiny amaranth has natural resistance to Curculionidae. Best treated with preventive measures rather than reactive treatment.

• ✓ Inspect and, if possible, quarantine any new plants for 2 to 3 weeks.
• ✓ Use high-quality, clean substrate and wash or disinfect pots and tools before reuse.
• ✓ Keep the environment clear by removing plant debris and stacked wood that serve as shelter.
• ✓ Adjust watering and avoid waterlogging, which exacerbates damage to weakened roots.
• ✓ Place adhesive bands in spring and summer if you had issues the previous year.
• ✓ Apply nematodes preventatively in late summer or autumn in pots and flowerbeds with a history of weevils.
• ✓ Regularly check leaf margins, as early detection of notches facilitates control.