Please help as i was planing many seeds a few months back, but I am currently unable to find out which of the saplings is white wisteria and what are the others. I would request to please check the attachment and help me.
If you planted 2 different species the direction that the stalks twist and the leaflet number & shapes may give you a clue as to which is which.
Wisteria floribunda (Japanese Wisteria) twines in a clockwise direction. Its leaves are bright green, compound pinnate with 13 – 19 leaflets. The leaflets are ovate-elliptic to ovate-oblong and pointed with blunt tips. Two of the white blooming Wisteria floribuna – ‘Alba’ and ‘Longissima Alba’ have 13 leaflets while varieties of other colours have 15 – 17 leaflets.
Wisteria sinensis (Chinese Wisteria) and other varieties all twine in a anticlockwise direction. It leaves are deep green , odd pinnate with 7 – 13 leaflets. The leaflets are ovate-oblong to ovate-lanceolate and broader at the base.
Follow the link below for a description of both species of the most commonly grown Wisterias. Note that there are several other varieties including one Wisteria fructescens that is native to North America.
A detailed description of Wisteria floribunda, for identification purposes can be found in:
Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture, Propagation and Uses: Michael A. Dirr, Stipes Publishing Co., 1977.