Grad, Bernard, A telekinetic effect on plant growth II. experiments involving treatment of saline in stoppered bottles, International Journal of Parapsychology 1964(a), 6, 473-498.

Grad, Bernard, A telekinetic effect on plant growth III. Stimulating and inhibiting effects, Research Brief Presented to the Seventh Annual Convention of the Parapsychological Association, Oxford University, Oxford, England Sep 1964(b).

Grad, Bernard R. Some biological effects of laying-on of hands: a review of experiments with animals and plants, Journal of the American Society for Psychical Research 1965(a), 59, 95-127 (Also reproduced In: Schmeidler, Gertrude (Ed.) Parapsychology: Its Relation to Physics, Biology, Psychology and Psychiatry, Metuchen, NJ: Scarecrow 1976).

MacDonald, R./ Dakin, H. S./ Hickman, J. L. Preliminary studies with three alleged ‘psychic healers,’ In: Morris, J. D./ Roll, W. G./ Morris, R. L (Eds), Research in Parapsychology 1976, Metuchen, NJ: Scarecrow 1977.

Miller, Robert N. The positive effect of prayer on plants, Psychic 1972, 3(5), 24-25.

Saklani, Alok, Preliminary tests for psi-ability in shamans of Garhwal Himalaya, Journal of the Society for Psychical Research 1988, 55(81), 60-70. Plants

Saklani, Alok, Psychokinetic effects on plant growth: further studies, In: Henkel, Linda A./ Palmer, John, Research in Parapsychology 1989, 1990, 37- 41. Plants

Solfvin, G. F. Studies of the effects of mental healing and expectations on the growth of corn seedlings, European Journal of Parapsychology 1982(b), 4(3), 287-323.

Wallack, Joseph Michael, Testing for the psychokinetic effect on plants: effect of a ‘laying on’ of hands on germinating corn seed (Master’s thesis) West Georgia College 1982, Summarized in Psychological Reports 1984, 55, 15-18. (Negative results)

Plants - Other references
Loehr, Franklin, The Power of Prayer on Plants, New York: Signet 1969.