Diagnosing Holes in Impatiens Petals: Insect Culprits and Organic Controls

Tiny holes in impatiens petals—while leaves remain untouched—point to specific pests. Understanding the difference between crawling and flying insect damage helps target treatment.

Identifying the Pest

General rule: Crawling insects (slugs, caterpillars, beetles) eat foliage. Flying insects (thrips, certain beetles, aphids) target flowers. Since only petals show damage, suspect flower-feeding beetles or aphids clustering in buds.

Organic Treatment Options

Insecticidal Soap (First Line)

Mix 3 tsp non-concentrated lemon dish soap + 1 tsp lemon ammonia per gallon water. Spray thoroughly, covering flower buds and leaf undersides. Repeat every 5-7 days.

Botanical Insecticides (Stronger Control)

• Pyrethrum: Derived from chrysanthemums, fast-acting but short-lived
• Rotenone: Broader spectrum, longer residual (check local regulations)

Source from specialty nurseries or online suppliers like Gardens Alive.

Prevention Tips

• Inspect plants before purchase
• Remove heavily infested flowers
• Encourage beneficial insects with diverse plantings
• Avoid broad-spectrum chemicals that harm pollinators

Start with soap sprays—they're effective, inexpensive, and environmentally gentle.