Propagation by Cuttings
Vitex rotundifolia can be grown from cuttings taken when the plants are not in flower or fruit. NTBG recommends tip cuttings 4 inches long with at least 2 nodes and removing the leaves from the cuttings. Criley notes that they should be non-flowering terminals.
Vitex rotundifolia can be rooted without any hormone treatment. However, using a mild rooting hormone (e.g. 0.05% indolebutyric acid (IBA) and 0.025% naphthaleneacetic acid (NAA)) (Koob, email) will increase rooting success. Criley found that treatments with IBA, Hormex Nos. 3, 8, and 16 all improved root quality. Cuttings should be rooted in a well-drained rooting medium such as 3 parts perlite to 1 part vermiculite. Rooting takes 3 to 4 weeks under mist.