High-efficiency HPS flowering lamp engineered to maximise usable light, accelerate bloom cycles, and increase yield quality.

Osram PlantaStar 240V HPS Lamp is purpose-built for horticulture — delivering a broad-spectrum, red-dominant HPS output (~2000K) that enhances flower development, improves CO₂ assimilation, and reduces overall production time. Among the highest-performing HPS lamps for usable plant light, the PlantaStar is the choice for growers who want more from every watt.

Why Spectrum Efficiency Matters in Flower

Flowering performance depends heavily on light spectrum and photon efficiency. Standard HPS lamps often lack the spectral balance needed to fully support bloom — leading to slower flowering cycles, poor bud development, and wasted light output. The PlantaStar’s photosynthesis-matched spectrum aligns with plant absorption peaks, delivering more usable light per watt and better results across the full flowering phase.

Key Performance Features

High µmol/J Efficiency — Among the highest-performing HPS lamps for usable plant light output.
Photosynthesis-Matched Spectrum — Designed to align with plant absorption peaks for more efficient light use.
Broad Spectrum Output (~2000K) — Red-dominant spectrum supports balanced, accelerated flowering vs standard HPS.
Consistent Photon Flux — Stable light delivery maintained across the full operating life.
High Output (up to 141 lm/W) — Strong intensity for dense, productive flowering.

Build & Reliability

Durable Arc Tube Design — Long-lasting and stable across extended operating hours.
Shock-Resistant Construction — Handles the demands of active grow environments.
Corrosion-Resistant Socket — Engineered for humid grow room conditions.
Elastic Burner Housing — Improved durability under sustained heat stress.

Plant Response

Accelerates flowering initiation and reduces production time
Improves flower size, density, and overall bud quality
Increases metabolic efficiency via improved CO₂ assimilation
Supports healthier overall plant development through the bloom phase

Technical Overview

Voltage: 240V
Light Type: High Pressure Sodium (HPS)
Spectrum: Red-dominant (~2000K)
Application: Flowering / Bloom phase
Compatibility: HPS ballast systems

Pair With the Right Reflector

To get the most from your PlantaStar HPS, pair it with a reflector that distributes that high-efficiency output evenly across your flowering canopy:

Adjust-A-Wing Avenger Reflector | Adjustable HPS/CMH Light Reflector — adjustable wing geometry for precise control over light spread and footprint through every stage of flower.
Low Bay Reflector | Wide-Spread Grow Light Reflector (Australian Made) — wide-angle geometry for broad, even canopy coverage across larger grow rooms.

Best Used For

Flowering and bloom phase lighting
Indoor grow rooms and grow tents
Hydroponic and soil systems
Growers running HPS ballast systems seeking maximum photon efficiency

What problems does the Osram PlantaStar HPS solve?

The PlantaStar addresses the most common flowering-stage lighting issues — slow flowering cycles, poor bud development, inefficient light output, and standard HPS lamps lacking spectral balance. Its photosynthesis-matched spectrum and high µmol/J efficiency deliver more usable light per watt, directly improving flowering performance and final yield quality.

Is the Osram PlantaStar the best HPS bulb for flowering yield?

For growers running 240V HPS systems, the PlantaStar is one of the highest-performing options available. Its broad-spectrum red-dominant output, consistent photon flux, and durable construction make it a reliable choice for growers focused on maximising yield quality and reducing production time.

Best high-efficiency HPS grow light Australia — what to look for

µmol/J efficiency, spectral alignment with plant absorption peaks, and build quality suited to humid grow environments are the key factors. The Osram PlantaStar 240V HPS delivers all three — horticulture-specific design, up to 141 lm/W output, and proven performance across hydroponic and soil flowering applications.

What you'll notice

Faster flowering initiation and reduced overall production time
Denser, higher-quality buds across the canopy
More efficient light use without increasing power consumption
Consistent output maintained across the full lamp lifespan

Frequently Asked Questions

Is Osram PlantaStar 240V HPS Lamp compatible with my existing ballast?

Osram PlantaStar 240V HPS Lamp is designed to match standard HPS and MH ballast specifications. Always match your lamp wattage to your ballast wattage exactly. Using a 600W lamp on a 600W ballast is correct — never run a lamp at a wattage it is not rated for. Check the lamp base type (E40 mogul or E27 medium) against your reflector socket before purchasing.

How often should I replace Osram PlantaStar 240V HPS Lamp?

HPS and MH lamps degrade over time even if they still produce visible light. Most growers replace HPS lamps every 10,000–12,000 hours of use or approximately every 12 months with a standard 18/6 or 12/12 schedule. Lamps that have dropped below 75% of their original output significantly reduce yields even if they are technically still functioning.

How do I safely dispose of Osram PlantaStar 240V HPS Lamp?

HPS and MH lamps contain mercury and must be disposed of responsibly. Do not place in general household waste. Take spent lamps to your local council waste facility or participating electrical retailer for safe disposal through Australia's lamp recycling scheme.

Does Osram PlantaStar 240V HPS Lamp ship fast within Australia?

Yes — Osram PlantaStar 240V HPS Lamp ships from our Australian warehouse with fast tracked delivery Australia-wide. Most orders to east coast states arrive within 2–5 business days. WA, NT, and TAS orders typically arrive within 5–12 business days.