Skip to content
1927 Map of the Arboretum

Weld Hill Growth Facilities

The Weld Hill Growth Facilities consist of 12 individually controlled greenhouses, several types of growth chambers for precise control of growing conditions, and an outdoor common garden. Use of the growth facilities requires an approved Space Request and is governed by the Weld Hill Plant Growth Facility Policies. No plants should be brought into the growth facilities without the approval of Lee Toomey, Plant Growth Facilities Manager.


Teaching Collection

Teaching Collection

The teaching collection is maintained as an educational resource to support Harvard courses and laboratories related to plant biology.

Search the collection.


Individually controlled greenhouses (x12)

Individually controlled greenhouses (x12)

384 sq ft each
2 fixed benches, 3 rolling benches
ARGUS controls: remote monitoring and data logging


Conviron PGR-15 Reach-In Chamber (x4)

Conviron PGR-15 Reach-In Chamber (x4)

16.1 sq ft growth area
69″ Extended growth height
Humidification and dehumidification control
Temperature Range: +10ºC to +45ºC lights ON; +4ºC to +45ºC lights OFF
High Light Intensity: 1150 micromoles/m2/s
CMP6050 Controls: remote monitoring and data logging


Conviron MPTC-144 Plant Production Chambers (x2)

Conviron MPTC-144 Plant Production Chambers (x2)

144 sq ft growth area; 4 plant growth modules with 3-tier mobile shelving
17″ growth height
Humidity control
Temperature Range: +15ºC to +35ºC lights ON; +10ºC to +35ºC lights OFF
High Light Intensity: 275 micromoles/m2/s
CMP6050 Controls: remote monitoring and data logging


Conviron E7/2 Reach-In Chamber (x2)

Conviron E7/2 Reach-In Chamber (x2)

8.2 sq ft growth area
23.5″ growth height
Humidity control
Temperature Range: +10ºC to +45ºC lights ON; +4ºC to +45ºC lights OFF
High Light Intensity: 550 micromoles/m2/s
CMP6050 Controls: remote monitoring and data logging


Conviron G30 Germination Chamber (x1)

Conviron G30 Germination Chamber (x1)

16.1 sq ft growth area
72″ Extended growth height
Humidity control
Temperature Range: +10ºC to +45ºC lights ON; +4ºC to +45ºC lights OFF
High Light Intensity: 8 lamps per side
CMP6010 Controls


Conviron E8 Reach-In Chamber (x2)

Conviron E8 Reach-In Chamber (x2)

8 sq ft growth area
69″ Extended growth height
Humidification and dehumidification control
Temperature Range: +10ºC to +45ºC lights ON; +4ºC to +45ºC lights OFF
Light Intensity: 1000 micromoles/m2/s
CMP6050 Controls: remote monitoring and data logging


Biochambers TPC-19 Reach-In Chamber (x3)

Biochambers TPC-19 Reach-In Chamber (x3)

20.4 sq ft growth area
56″ growth height
Additive Humidity
Additive CO2 and CO2 scrubber
CO2 sensor: Li-Cor Li-820
Temperature Range: +4ºC to +40ºC lights ON or OFF
Light Intensity: 1500 micromoles/m2/s
Light Sensor: Apogee QSO-A5E quantum PAR light sensor (400-700nm spectrum region)
Light Source: Halogen incandescent bulbs and T5HO fluorescent lamps
VNet Touch Controls: remote monitoring and data logging


Biochambers LTCB-19 Reach-In Chamber (x1)

Biochambers LTCB-19 Reach-In Chamber (x1)

19.8 sq ft growth area
51″ growth height
Additive Humidity
Additive CO2 and CO2 scrubber
CO2 sensor: Li-Cor Li-820
Temperature Range: -10ºC to +40ºC lights ON or OFF
Light Intensity: 1000 micromoles/m2/s
Light Sensor: Apogee QSO-A5E quantum PAR light sensor (400-700nm spectrum region)
Light Source: Halogen incandescent bulbs and T5HO fluorescent lamps
VNet Touch Controls, remote monitoring and data logging


Biochambers LTRB-37 Walk-In Growth Room (x1)

Biochambers LTRB-37 Walk-In Growth Room (x1)

38 sq ft growth area
82″ growth height
Additive CO2
CO2 sensor: Li-Cor Li-820
Temperature Range: -5ºC to +40ºC lights ON; -10ºC to +40ºC lights OFF
Light Intensity: 1100 micromoles/m2/s
Light Sensor: Apogee QSO-A5E quantum PAR light sensor (400-700nm spectrum region)
Light Source: 400W metal halide and 400W High Pressure Sodium lamps
VNet Touch Controls: remote monitoring and data logging


Conviron A1000 Tissue Culture Chamber (x2)

Conviron A1000 Tissue Culture Chamber (x2)

26 sq ft growth area
8″ growth height
Humidity control
Temperature Range: +10ºC to +45ºC lights ON; +4ºC to +40ºC lights OFF
Light Intensity: 200 micromoles/m2/s
CMP6010 Controls