What's eating my winter melon?

Winter melon (Benincasa hispida) shares cucurbit pest pressure with squash and cucumber. Cucumber beetles are the headline threat, spreading bacterial wilt that collapses vines. Aphids and two-spotted spider mites attack foliage, while the melon fruit fly bores directly into developing gourds. Row covers at transplant and vigilant scouting are your best defenses.

Feeding notches on leaves and stems; larvae feed on roots; adults transmit bacterial wilt, causing sudden vine collapse Use row covers until flowering; hand-pick adults; apply kaolin clay or pyrethrin as a last resort; remove wilted vines promptly

Females puncture developing fruit to lay eggs; larvae tunnel inside, causing rot and premature drop Use protein-bait traps; bag developing fruit with paper or organza bags; destroy infested fruit immediately

Clustered colonies on growing tips and leaf undersides cause leaf curl and sticky honeydew; vectors of cucumber mosaic virus Blast off with water; apply insecticidal soap or neem oil; encourage ladybirds and parasitic wasps

Fine webbing on leaf undersides with yellow stippling; worsens in hot, dry spells; can cause early defoliation Maintain adequate irrigation to reduce heat stress; spray with neem oil or horticultural oil; introduce predatory mites (Phytoseiulus persimilis)