Rose: new growth twisted, puckered or distorted

What it is likely to be on rose

1. Aphids

   Candidate 1very common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Aphids

   Checked 2026-08-13

   Sap-feeding insects that cluster on soft growing tips and leaf undersides, distorting new growth and leaving sticky honeydew that blackens with sooty mould. Most garden infestations are transient and end when predators catch up.

   Points towards it

   • · aphids are visible in clusters on the distorted tips
   • · honeydew on the growth below confirms sap-feeding above it
   • · aphid feeding distorts tissue that was still expanding

   Argues against it

   • · no pest can be found, and aphid distortion is normally accompanied by visible colonies. Distortion on every growing point with nothing feeding on it needs an identification rather than a treatment

   Check this next

   Open out a distorted tip and look inside it. Aphids shelter within the curled leaves, so a tip that looks clean from outside may not be — and a tip that is genuinely clean points away from aphids entirely.

   What to do now

   Wash the colonies off the growing tips with a jet of water and check again in a few days. If no pest is present, stop feeding and spraying and seek an identification before treating anything.

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Aphids — control

   Checked 2026-08-13

2. Powdery mildew

   Candidate 2common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Powdery mildew

   Checked 2026-08-13

   A white, floury coating on the upper leaf surface, most familiar on courgettes and cucumbers late in the season. Unlike most fungal diseases it does not need the leaves to be wet — it needs the roots to be dry and the air to be humid, which is why it arrives in a warm dry August.

   Points towards it

   • · mildew infects expanding tissue and puckers it as it grows, leaving a white film on the distorted surface
   • · only tissue that was still expanding when infected becomes distorted
   • · powdery mildew is favoured by dry roots, unlike most fungal diseases

   Argues against it

   • · honeydew means a sap-feeding insect is present, and mildew produces none. Sticky distorted tips are an aphid problem — this rules it out entirely.

   Check this next

   Look for a white powdery film on the puckered surface, and open the tip to check for insects. Mildew leaves a coating and no animal; aphids leave an animal and something sticky.

   What to do now

   Improve airflow, keep the roots evenly moist — dry roots make it worse — and remove the worst-affected shoots. Any fungicide must be approved for the crop and used exactly as its label directs.

   ·source

   Sourced guidancemoderate confidence

   • Royal Horticultural Society: Powdery mildew — control

   Checked 2026-08-13

3. Capsid bug

   Candidate 3common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Capsid bugs
   • Agriculture and Horticulture Development Board — AHDB: Capsid bugs on ornamentals

   Checked 2026-08-13

   A fast-moving green or brown bug, 6mm long, which feeds on shoot tips and is almost never seen doing it. What it leaves is unmistakable once the sequence is understood: it kills small patches of tissue in a leaf still folded in the bud, and as the leaf expands those patches tear into ragged holes with brown edges, so the finished leaf looks chewed and distorted while the plant never had a caterpillar on it.

   Points towards it

   • · capsid distortion and capsid holes are the same injury at two ages — a crumpled shoot tip with torn holes in it is this and very little else
   • · only the tips are affected, because only the tips were in bud when it fed
   • · no insects present, which separates this from the aphid it is most often mistaken for

   Argues against it

   • · honeydew means a sap-feeder that stayed — capsids feed briefly and leave nothing sticky behind — this rules it out entirely.

   Check this next

   Check whether the crumpled tips are sticky. Aphids distort a shoot and coat it in honeydew, and they are still there in a colony; capsid leaves a dry, torn, one-sided distortion with nothing on it and nothing on the plant.

   What to do now

   Pinch the ruined tips out and let the plant grow away. On a fuchsia or a buddleja this also improves the shape, which is as close as this diagnosis gets to a treatment.

   ·source

   Sourced guidancehigh confidence

   • Agriculture and Horticulture Development Board — AHDB: Capsid bugs on ornamentals

   Checked 2026-08-13

Narrow it down

This page lists everything at once, which is the right shape for reading and the wrong shape for deciding. The interactive tool asks one question at a time, starting with whichever would separate these causes fastest, and stops as soon as further answers would not help.

Opens with the plant and the symptom already set. Nothing you answer is stored or sent anywhere — the answers live in the address bar and nowhere else.

What this does not cover

These are the causes GrowingHQ holds rules for on rose — not every cause there is. Where several problems look alike, the honest answer is often that they cannot be told apart by eye, and a page that named one would be guessing. If none of the above fits, the general new growth twisted, puckered or distorted page lists causes across all plants, and the Rose profile lists the problems it is prone to.