Rhombic Global Infusion Ltd · Thika, Kenya · Est. 2019
01° 03′ S
37° 05′ E
—
Harvest 2026

The Nutrient Orbit.

Five precision NPK blends, orbiting one idea — that a seed, a soil, and a season deserve fertilizer formulated for the exact hour they need it.

05Blends
04Regions
12+Crops
100%Farmer-first
/ 01 — Manifesto

We don't sell fertilizer.
We sell the season after this one.

Rhombic Global Infusion Ltd is a Kenyan fertilizer manufacturer supporting farmers with high-quality, reliable NPK blends — formulated to meet crop nutrient requirements at different growth stages, ensuring strong growth, improved yields, and better farm returns.

We ship on time because a delayed bag is a delayed harvest. We publish our ratios because a farmer who knows what's in the bag plants with confidence. And we stake our name on three words the country can hold us to — Healthy Soils. Healthy Crops. Healthy Humans.

05
NPK Formulations
04
Kenyan Regions
12+
Crops Supported
2019
Founded · Thika
/ 02 — Blends

Five blends.
One growing arc.

Each blend lives at a specific point in the crop's year. Scroll to watch the dominant nutrient — nitrogen, phosphorus, potassium — shift across the orbit as each stage takes its turn.

/ 01
Stage 01 · Planting · Germination

The first breath
of every harvest.

9:16:6 Rhombic Star · Planting

A phosphorus-forward planting blend. Wakes the seed, fractures the taproot, anchors the seedling against the first dry spell of the season. The strongest start Rhombic makes.

  • Encourages strong root development
  • Improves early crop establishment
  • Enhances seedling vigor
Suitable Crops

Maize · Beans · Potatoes
Sorghum · Vegetables

Best Regions
Western KenyaRift ValleyCentral Highlands
/ 02
Stage 02 · Planting · High Phosphorus

Deep roots
hold the season.

11:30:4 Planting · P-Forward

Heavier phosphorus for demanding soils. Accelerates rapid root formation, strengthens early plant architecture, improves the crop's ability to pull nutrients from the ground below.

  • High phosphorus for rapid root formation
  • Strong early plant development
  • Improves nutrient uptake
Suitable Crops

Maize · Wheat · Tomatoes · Legumes

Best Regions
Rift ValleyCentral HighlandsWesternNyanza
/ 03
Stage 03 · Planting · Balanced Start

A steadier hand
for young fields.

10:17:0 Planting · K-Free

A potassium-free planting blend tuned for soils that already hold their K. Supports early establishment, enhances phosphorus availability, lifts seedling performance on demanding starts.

  • Supports early growth and establishment
  • Enhances phosphorus availability
  • Improves seedling performance
Suitable Crops

Maize · Beans · Small grains · Vegetables

Best Regions
Central HighlandsRift ValleyWestern Kenya
/ 04
Stage 04 · Top Dressing · Vegetative

When the crop
reaches for the sun.

20:6:15 Top Dressing · N-Forward

Nitrogen-forward, potassium-supported. Pushes strong vegetative growth, tightens drought and stress tolerance, carries the crop through its hungriest weeks without breaking stride.

  • Promotes strong vegetative growth
  • Improves drought and stress tolerance
  • Enhances overall productivity
Suitable Crops

Maize · Kale · Legumes · Sunflower

Best Regions
Rift ValleyWestern KenyaCentral Highlands
/ 05
Stage 05 · Top Dressing · The Magic

The finishing touch
before harvest.

15:10:20 Top Dressing Magic · K-Forward

Our signature top-dressing blend. Heavy potassium for flowering and grain filling, balanced nitrogen to hold the canopy, phosphorus to keep uptake fluent. The one farmers ask for by name.

  • Improves flowering and grain filling
  • Enhances disease resistance
  • Boosts crop quality and yield
Suitable Crops

Maize · Tomatoes · Bananas · Watermelons

Best Regions
Western KenyaRift ValleyEastern Highlands
/ 03 — Territory

Made for Kenyan soils,
from Rift to Eastern Highlands.

Formulations are tuned by region — the soil that feeds Nairobi doesn't eat the same as the soil that feeds Kisumu. Hover a region to see which blends belong there.

WESTERN RIFT VALLEY NYANZA CENTRAL EASTERN COAST NORTH
01Western Kenya9:16:6 · 20:6:15 · 15:10:20
02Rift Valley9:16:6 · 11:30:4 · 20:6:15
03Central Highlands11:30:4 · 10:17:0 · 20:6:15
04Nyanza11:30:4
05Eastern Highlands15:10:20

Three promises
growing from one root.

/ 01

Healthy Soils

We formulate blends that feed the soil, not just the crop. Balanced NPK ratios restore what last season took, so the next one starts stronger.

/ 02

Healthy Crops

Stage-matched nutrition — planting through top dressing — so every crop gets exactly what it needs in exactly the week it needs it.

/ 03

Healthy Humans

Better nutrition in the soil means better nutrition on the plate. Rhombic is farming for a country, not a quarter.

HARVEST 2026

Buy Rhombicfor the season ahead.

Order Rhombic +254 705 839 839