Cannabis in Greenhouses

Power in Predictability

Uniformity leadership to enhance cannabis yield & consistency.

What is it?

A high-performance, dynamic lighting platform designed to optimise the vegetative and flowering stages of light-demanding plants.

How does it work?

Engineered to be application adaptable, improve uniformity and maximise PAR light-use efficiency within your facility.

Baseline PPF output (µmol/s)

Up to 2x PPF output (µmol/s) vs 1 kW HPS

What does this mean for my cannabis plants?

Growers & academics agree that as a rule of thumb, a 1% increment in PPFD results in a 1% increase in cannabis yield¹. Improving the uniformity over the growing areas reduces supplementary PAR light deviation, benefitting plant quality and production consistency.

Existing

Conventional 1 kW HPS

Retrofit >PPFD

Bloem 1 kW Impact (Spectrum B7)

Optimised <Energy

Bloem 1 kW Impact (Spectrum B7)

“Intensity uniformity is the consistency of total PAR light distributed over the growing area. This is typically measured at the crop canopy by the volume (%) of the grow area that falls within the specified tolerance of the PPFD setpoint.”

Using Bloem’s Wand Platform

The Bloemteknik Wireless Adaptive Network Delivery (Wand) platform provides advanced dynamic control for single and multi-channel grow lights.

Dynamic Lighting

Whether the grow areas require precise, plant-centric dynamic control or a straightforward daily schedule, Bloem’s Wand platform offers a flexible and tailored solution designed to meet the unique needs of your facility

Development Phase Shifting

Dynamic light adjustment for optimised plant growth stages

Energy Cost Fluctuation

Efficient energy distribution to balance cost and performance

Circadian Rhythm Steering

Light modulation aligned with natural plant cycles

Artificial Daylength Extension

Extended illumination periods for enhanced productivity

Blue Light
400 - 500 nm

Enhances compact, bushier growth that can’t support bud formations

Essential in seedlings for promoting rooting and strong stem formation

Prevents against pale/yellow and weak/floppy plant characteristics

Green Light
500 - 600 nm

Penetrates deeper below the primary leaf layers producing yields below the upper canopy

Easier to detect pests, pathogens, and nutrient deficiencies

Improved human visual quality for a practical working environment

Red Light
600 - 700 nm

Flowering under red wavelengths can result in larger, fuller plants with increased cannabinoid content

Encourages flowering and budding, vital for germination and flowering stages

Increased biomass, leaf area, length and height and production of flowers for larger yields

Far Red Light
700 - 800 nm

FR photons travel through the canopy efficiently

Elicits shade avoidance response, promoting stem elongation

End of day FR treatment can be used to artificially extend night cycles

Crop Stage

Propagation

Vegetative

Mother

Flowering

Propagation

Vegetative

Mother

Flowering

PPFD (µmol/m²/s)

150-300

400-600

800-1000

150-300

600-900

1000-1500

Photoperiod (Hours)

CO² (ppm)

400-800

800-1400

The quantity of photosynthetic active radiation (400-700nm) required is defined by the Daily Light Integral (DLI). DLI refers to the quantity of PAR the plant is exposed to within a single day (24-hour period). Each plant, including cannabis plants, have a minimum and maximum DLI to facilitate growth and this varies by strain, development phase, CO2 supplementation and other environmental parameters inside the CEA facility. The desired photosynthetic active radiation density (PPFD) can be calculated from the typical DLI target and exposure duration (photoperiod) shown below.

Examples of cannabis DLI & PPFD targets without CO² supplementation
(400-800 ppm CO²):
Propagation phase recommended DLI of 10-20 mol/m²/day and 18-hour photoperiod.
10 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 154 µmol/m²/s minimum PPFD
20 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 308 µmol/m²/s maximum PPFD

Vegetative phase recommended DLI of 25-40 mol/m²/day and 18-hour photoperiod.
25 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 385 µmol/m²/s minimum PPFD
40 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 617 µmol/m²/s maximum PPFD

Flowering phase recommended DLI of 35-45 mol/m²/day and a 12-hour photoperiod.
35 mol/m²/day / 12 hours / 60 minutes / 60 seconds = 810 µmol/m²/s minimum PPFD
45 mol/m²/day / 12 hours / 60 minutes / 60 seconds = 1042 µmol/m²/s maximum PPFD

Examples of cannabis DLI & PPFD targets with CO² supplementation
(800-1400 ppm CO²):
Propagation phase recommended DLI of 10-20 mol/m²/day and 18-hour photoperiod.
10 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 154 µmol/m²/s minimum PPFD
20 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 308 µmol/m²/s maximum PPFD

Vegetative phase recommended DLI of 40-60 mol/m²/day and 18-hour photoperiod.
40 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 617 µmol/m²/s minimum PPFD
60 mol/m²/day / 18 hours / 60 minutes / 60 seconds = 925 µmol/m²/s maximum PPFD

Flowering phase recommended DLI of 45-65 mol/m²/day and 12-hour photoperiod.
45 mol/m²/day / 12 hours / 60 minutes / 60 seconds = 1042 µmol/m²/s minimum PPFD
65 mol/m²/day / 12 hours / 60 minutes / 60 seconds = 1504 µmol/m²/s maximum PPFD

Get the Full Story

To see the complete list of light wavelength effects on cannabis, PPFD & photoperiods for all growth stages and much more please download our greenhouse cannabis cultivation lighting application guide.

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