Description
Commercial-Grade Calcium & Magnesium Nutrition
GreenPlanet HORTI Cal is a highly concentrated, fully soluble dry fertiliser designed to provide essential nitrogen, calcium, and magnesium throughout vegetative growth and flowering.
With an analysis of 14-0-0 + Ca + Mg, HORTI Cal forms an important part of the GreenPlanet HORTI Commercial Line, working alongside stage-specific HORTI nutrients to maintain strong plant development and balanced mineral nutrition.
Calcium supports cell structure and vigorous new growth, while magnesium plays an essential role in chlorophyll formation and photosynthesis. The additional nitrogen supports healthy foliage and continued plant development.
Its concentrated dry format is particularly well suited to commercial hydroponic and greenhouse operations where storage efficiency, accurate dosing, consistency, and high solubility are important.
Key Features
- Commercial-grade dry fertiliser
- 14-0-0 + calcium + magnesium
- Supplies essential nitrogen, calcium, and magnesium
- Supports vegetative and flowering stages
- Promotes strong structural development
- Supports chlorophyll production and healthy green foliage
- Highly concentrated powder format
- Fully soluble for commercial fertigation
- Suitable for reservoirs and day tanks
- Compatible with injector and dosing systems
- Designed to complement the HORTI Commercial feeding programme
Benefits
- Supports healthy cell development and plant structure
- Helps maintain strong, vigorous growth
- Promotes efficient photosynthesis
- Supports healthy green foliage
- Provides important secondary nutrition throughout the crop cycle
- Ideal for high-volume commercial nutrient preparation
- Allows flexible nutrient management across multiple growth stages
Specifications
| Specification | Details |
|---|---|
| Brand | GreenPlanet Nutrients |
| Range | HORTI Commercial Line |
| Product | HORTI Cal |
| Product Type | Dry Fertiliser / Base Nutrient Component |
| NPK | 14-0-0 |
| Additional Nutrients | Calcium & Magnesium |
| Form | Fully Soluble Powder |
| Growth Stages | Vegetative & Flowering |
| Commercial Application | Reservoir, Day Tank, Injector & Dosing Systems |
Why Choose GreenPlanet HORTI Cal?
HORTI Cal gives commercial growers a dedicated calcium, magnesium, and nitrogen component that can be paired with the appropriate HORTI base nutrient as crop requirements change.
The concentrated powder format helps reduce storage space, handling requirements, and transport volume compared with pre-diluted liquid nutrient systems, making it particularly practical for commercial-scale horticulture.
Application
| Growth Stage | HORTI Cal per 100L |
|---|---|
| Vegetative | 75g |
| Early Bloom | 100g |
| Mid Bloom | 110g |
| Late Bloom | 80g |
Recommended target EC values are approximately 1.8 EC in vegetative growth, 2.0 EC in early bloom, 2.2 EC in mid bloom, and 1.8 EC in late bloom, based on low-EC source water.
FAQs
Is HORTI Cal a calcium and magnesium supplement?
Yes. HORTI Cal supplies both calcium and magnesium, along with nitrogen, as part of the HORTI commercial nutrient programme.
Can HORTI Cal be used during flowering?
Yes. It is designed for use throughout vegetative and flowering stages, with application rates adjusted according to growth stage.
Is HORTI Cal water soluble?
Yes. It is a fully soluble dry fertiliser designed for commercial fertigation systems.
What should HORTI Cal be used with?
It is paired with HORTI Grow during vegetative growth, HORTI Bloom during early and mid flowering, and HORTI Late Bloom during the late flowering stage.