How to propagate Blackberry Lock Ness
Stratify seeds in the first year. Sow seeds shallowly. Keep seeds moist and plant out in Spring.
Tip layer in late summer to early autumn. The young shoots are bent over to the ground and covered with soil and left throughout autumn and winter. In spring, cut the new plant away and replant.
Root or leafy stem cuttings can propagate effectively. Plant 10-15 cm stems in moist sand. Once rooted, plant out. Take 7-15 cm root cuttings in autumn and cold store. Plant out in Spring in same soil mix 5-7 cm apart.
Suckers can be removed from the parent plant and replanted.
Alternatively, R.odoratus may be increased by division and R.'Benenden' and R.ulmifolius 'Bellidiflorus' by layering in spring. You can also propagate by root division in winter.