There is around a dozen of methods for determination of length increment in peat mosses. A majority of them are very labour intensive but with low output and some artefactual phenomena that aff ect the increment estimates. This paper describes the capabilities of the recently designed method of geotropic curvatures, which is based on the explicit negative geotropic response of peat moss shoots. Several variants of determining length increment are suggested and some promising lanes of research which can be promoted using the method of geotropic curvatures are considered.