apply 0.8% IBA (Rooting hormone) stick in well drained soil & mist taking 80 days to root
hope this helps.

Thanks for the tips. What season would you recommend to start with: spring or summer?. Would you recommend artificial light/heat and cutting placed in zip lock bag to maintain humidity? Softwood cuttings I have are thin as matchsticks and I am not sure which cutting is better for viburnums; flowered/non flowered? Thanks again!.

spring best time firm new growth best. if flower buds on cutting remove them. good air circulation important so open zip lock several times a day. indirect light best use windo with goo exposure

Thank you Sir!