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Crop guides · WITH TOM

White patches on tomatoes: could fruit be sunscalded?

Look at the fruit’s exposure before blaming the substrate. Newly exposed fruit may be vulnerable after heavy leaf removal or canopy damage.

Teral grower guidance · Updated 27 October 2026

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THE COCOPEAT CONNECTION

Why the root zone matters

Healthy coir-grown roots cannot protect fruit that suddenly loses canopy cover.

01 / OBSERVE

Three checks before you change anything

  1. Map pale patches against the sun-facing side of fruit.
  2. Review recent pruning, broken leaves and pest damage that exposed trusses.
  3. Check whether the lesion remains dry or has developed secondary decay.

02 / NARROW IT DOWN

Which pattern fits?

Choose the closest observation for a suggested next check.

Only exposed fruit

Review canopy protection and the timing of leaf removal. Compare shaded fruit in the same row.

Spots on shaded fruit too

Seek identification; spray injury, disease or other disorders may need investigation.

Soft or spreading lesions

Separate affected harvest material and request crop-specific diagnosis.

03 / TAKE THE NEXT STEP

Leave with something useful

Photograph exposed and shaded trusses and note the date canopy cover changed.

Keep in mind

Do not identify every pale fruit lesion as sunscald without checking the pattern.

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