Earligreen is ideal for controlled environment studies due to its fast life cycle, short height, and excellent growth in low light. Earligreen peas typically grow 18 to 35 cm tall and flower 20 to 25 days after emergence with the first fresh seed ready at 40 days. Optimal temperature is 20 to 25˚C. Earligreen grows well under a wide range of light levels (photosynthetic photon flux (PPF), 100 to 1000 µmol m-2 s-1) and a photoperiod of 16 to 24 hours. Leaves display a characteristic silver speckling pattern.
Earligreen was developed in 1950 at the Morden research station in Manitoba, Canada. Earligreen (PI 365417) is a hybrid of Engress and an unknown early maturing field pea. C. Walkof from the Canada Department of Agriculture donated Earligreen seed to the ARS-GRIN network in June of 1971. Germplasm has not been commercially available for at least 20 years.
Romagnano, Joseph F.; Mills, Emily; and Bugbee, Bruce, "‘Earligreen’ a Super-Dwarf Pea Cultivar for Use in Controlled Environment Research" (2010). Dwarf Crops. Paper 5.