Pest identification
What's eating my maximilian sunflower?
Aphids
Signs: Soft-bodied colonies on stem tips and flower buds; honeydew, sooty mold, and curled foliage.
Control: Strong water spray to dislodge; insecticidal soap or neem oil repeat-applications; attract beneficial insects.
Sunflower Beetle (Zygogramma exclamationis)
Signs: Striped adults and yellow larvae consume leaf tissue between veins, leaving skeletal foliage.
Control: Hand-pick; apply pyrethrin or spinosad as a last resort; companion-plant with insectary flowers.
Cutworms
Signs: Stems cut off at or just below soil level; young transplants collapse overnight.
Control: Place cardboard collars around stem bases; apply beneficial nematodes to soil; use Bacillus thuringiensis (Bt).
Keep maximilian sunflower pest-free
Healthy plants resist pests best. Get the basics right:
Maximilian Sunflower pests — FAQ
What is eating my maximilian sunflower?
Maximilian Sunflower shares the sunflower family's typical pests: aphids colonize stems and buds, and sunflower beetles chew leaves. Cutworms can sever young stems at soil level. Birds and goldfinches target the seed heads in late autumn. Its vigorous, clump-forming habit makes it fairly resilient once established.
How do I get rid of aphids on maximilian sunflower?
Soft-bodied colonies on stem tips and flower buds; honeydew, sooty mold, and curled foliage. Strong water spray to dislodge; insecticidal soap or neem oil repeat-applications; attract beneficial insects.
How do I get rid of sunflower beetle (zygogramma exclamationis) on maximilian sunflower?
Striped adults and yellow larvae consume leaf tissue between veins, leaving skeletal foliage. Hand-pick; apply pyrethrin or spinosad as a last resort; companion-plant with insectary flowers.
How do I get rid of cutworms on maximilian sunflower?
Stems cut off at or just below soil level; young transplants collapse overnight. Place cardboard collars around stem bases; apply beneficial nematodes to soil; use Bacillus thuringiensis (Bt).