Teral

Crop guides · WITH TOM

How do I investigate blossom-end rot in cocopeat tomatoes?

Check water consistency and calcium delivery before assuming the feed contains too little calcium.

Teral grower guidance · Updated 27 October 2026

Tom, Growlab character guideTomYour crop guides guide

THE COCOPEAT CONNECTION

Why the root zone matters

Fruit can receive insufficient calcium even when it is present in the root environment.

01 / OBSERVE

Three checks before you change anything

  1. Confirm the lesion is at the blossom end
  2. Review irrigation interruptions and uneven wetting
  3. Check roots and the complete nutrient programme

02 / NARROW IT DOWN

What changed recently?

Choose the closest observation for a suggested next check.

Dry periods or failed emitters

Correct delivery consistency and monitor new fruit.

Heavy feeding changes

Review nutrient balance with the adviser.

Uncertain fruit symptoms

Get identification before choosing a treatment.

03 / TAKE THE NEXT STEP

Leave with something useful

Focus on preventing injury to developing fruit and keep affected-fruit records.

Keep in mind

Eggshell additions are not a rapid correction for an established crop.

Discuss this with Teral →

Watch the related Growlab lessons

The written checks above stand on their own. These short lessons add context.

Lesson links selected from Growlab’s supplied transcript and description review.

Further technical reading

University of Minnesota Extension · Tomato disorders ↗