Day and night temperatures, daily light integral, and CO 2 enrichment affect growth and flower development of Campanula carpatica Blue Clips . R.D. Heins, A.C. Cameron , and W.H. Carlson. Photocontrol of flowering and stem extension of the intermediate-day plant Echinacea purpurea. Niu, G., R.H. Heins, A.C. Cameron and W.H. Carlson. R.D. Heins, A.C. Cameron and W.H. Carlson.
Cold treatment modifies the photoperiodic flowering response of Lobelia x speciosa .
R.D. Heins, A.C. Cameron and W.H. Carlson. Photoperiod and cold treatment regulate flowering of Rudbeckia fulgida Goldsturm . R.D. Heins, A.C. Cameron and W.H. Carlson. Flowering of Leucanthemum x superbum Snowcap in response to photoperiod and cold treatment. R.D. Heins, A.C. Cameron and W.H. Carlson.