Black pepper top shoot borer
A caterpillar that bores the tender growing tip of a pepper shoot so it blackens and dies back — checks a young vine's climb up its standard, most active in the monsoon.
- Pest
- Moth larva (Cydia hemidoxa)
- Damage stage
- Bores the tender growing shoot tips
- Favoured by
- The monsoon flush of new growth
- Main risk
- Slowed climb and fewer fruiting laterals on young vines
Overview
The top shoot borer is the larva of a small moth (Cydia / Laspeyresia hemidoxa). The caterpillar bores into the tender growing tip of a black pepper shoot and feeds inside, so the tip blackens, wilts and dies back; frass (excrement) is visible at the entry hole. It is most active during the monsoon, when the vine is putting out its main flush of new growth.
On a young vine still being trained up its standard, repeated killing of the growing tips checks the vine's extension and its production of fruiting laterals, so the vine climbs slowly and builds less bearing wood. On an established vine the damage is less serious but still sets back the new flush. Control is clipping and destroying bored tips on sight and, where young vines are being set back, a directed spray during the monsoon flush.
How to identify it
- The tender growing tip of a shoot blackens, wilts and dies back.
- Frass (excrement) visible at a small hole near the killed tip.
- A small caterpillar inside the bored tip if it is opened.
- Most noticeable during the monsoon flush, and most damaging on young vines still climbing their standard.
When it matters most
- On a young vine being trained up its standard — repeated tip killing slows the climb and reduces the fruiting laterals the vine builds.
- Less serious on an established, fully framed vine, though it still sets back the monsoon flush.
- Active mainly through the monsoon, when new growth is at its peak.
Cultural & organic control
- Clip and destroy bored, blackened shoot tips on sight, especially on young vines, to remove the caterpillar before it moves on.
- Keep young vines vigorous with good nutrition and mulch so they can push past minor tip damage.
- Spray neem formulations at the main monsoon flush where damage is building.
Chemical control
- Where young vines are being visibly set back, a recommended insecticide spray directed at the growing tips during the monsoon flush.
- Target the flush period rather than spraying routinely, and focus on young vines rather than the whole garden.
- Confirm the current product and timing with ICAR-IISR or your KVK.
Crops most at risk
Where this problem is called out in our crop guides — open a crop for the full package of practices.
Frequently asked questions
The growing tips of my young pepper vines keep turning black and dying. Why?
This is typical of the top shoot borer, a small caterpillar that bores into the tender growing tip so it blackens and dies back, with frass visible at the entry hole. It is worst during the monsoon flush and most damaging on young vines still climbing their standard, because it slows the climb and reduces fruiting laterals. Clip and destroy the bored tips on sight, and spray neem or a recommended insecticide at the monsoon flush where damage is building.
Is top shoot borer a serious problem on established pepper vines?
It is much less serious on an established, fully framed vine — it still sets back the monsoon flush of new growth, but the vine has plenty of bearing wood already. The pest matters most on young vines that are still being trained up their standard, where repeated tip killing slows the whole build-up of the vine.
Symptoms and control measures follow ICAR, KVK and state agricultural-university package-of-practices; any named chemical is a registered use. Always read the product label and confirm the dose for your crop and zone. editorial policy.