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Performance & Quality

Improve Pollination, Flower Set & Fruit Set

Every fruit starts as a successfully pollinated, retained flower — so set is one of the highest-leverage points of the season. Poor set, flower drop, and malformed fruit quietly cap yield before sizing even begins. This guide covers what drives pollination and set, and the Vegalab program that supports it.

Works across

Why it matters

A crop can look healthy and still lose much of its potential at bloom. Pollen Boost is one of Vegalab's strongest commercial products — a pollination promoter that supports flower bud differentiation, supplies nutrients at pollination, helps prevent fruit deformation, and promotes new shoot development. Improving set converts more flowers into harvestable fruit.

How to measure it

Track set rate (fruit retained vs. flowers), flower/fruit drop, malformed-fruit rate, and fruit per cluster. Watch the bloom-to-set window, where the losses happen.

What drives it

  • Adequate boron and calcium for viable pollen and strong flower tissue
  • Good plant energy and balanced nutrition at bloom
  • Low heat and water stress during flowering
  • A bloom-stage program that supports set and reduces deformation

Recommended Vegalab Program

RoleProductUse
Bloom & setPollen BoostPollination promoter; supports set & reduces deformation
Potassium supportPotassium ProP-K support at bloom & set
Balanced feedNPK ProBalanced nutrition at flowering
Stress supportVita BoostKelp + amino acids for resilient flowers

Good to know

If flower or fruit drop is driven by a pest, disease, or a calcium disorder, diagnose it first in the Pest & Disease Library. Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.

Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.

Frequently asked questions

Why are my flowers dropping without setting fruit?

Common causes are heat/water stress and boron or calcium shortfalls at bloom. Support set with a bloom program and manage stress.

When do I apply set products?

Around bloom — the window where set is won or lost.

Does this replace pollinators?

No — it supports flower health and pollen viability so pollination results in retained fruit.