Hoary Tansyaster with Aphids? Rare but Treatable

Aphids on Hoary Tansyaster: What to Know?

Aphids on Hoary Tansyaster (Dieteria canescens) is a pest condition with moderate severity. Hoary Tansyaster has low susceptibility to this disease. Uroleucon is a genus of aphids that primarily attacks plants in the daisy family (Asteraceae), such as marigold, coneflower, oxeye daisy, chrysanthemum, thistle, and scentless mayweed. The aphids are...

Hoary Tansyaster is a medium-care plant.

Unlike most plants, Hoary Tansyaster has natural resistance to Aphids. Best treated with preventive measures rather than reactive treatment. Unlike fungal diseases, Aphids on Hoary Tansyaster responds quickly to integrated pest management.

• ✓ Regularly inspect during warm periods, especially buds and stems.
• ✓ Avoid over-fertilizing with nitrogen and provide balanced nutrition to prevent shoots from becoming unnecessarily soft and attractive.
• ✓ Control nearby weeds in the daisy family, such as thistles and scentless mayweed, which can act as hosts.
• ✓ Quarantine newly purchased plants for a few days and rinse them off before placing them with others.
• ✓ Clear away plant debris in the autumn and rotate growing locations between seasons in the vegetable garden to reduce aphid buildup.