When is the best time of the year to prune my DB Honeysuckle?
A website from Arizona said that for a (full) Bush Honeysuckle you take off the top half and shape it how you want it to look.
Do you have more accurate info on my Dwarf variety in our climate?
The Dwarf Bush Honeysuckle(Diervilla lonicera) is not only an Ontario native plant but it also attracts hummingbirds and bees into your garden, so you have chosen wisely. Also, it is a fairly easy care plant which can tolerate both full sun and part shade, is adaptable to dry or moist locations and is highly tolerant of urban pollution. It has a life span of about 20 years and has a medium growth rate.
Pruning should be done in very early spring as the plant sets flower buds on new growth, blooming in mid summer. Firstly, prune out any diseased, damaged or dead branches. Then, take out any branches that are either crossing or are growing outward in a dangerous or aesthetically unappealing direction. Once this is done, stand back and take stock of what is left. You will next want to do some harsh rounded pruning taking away about 1/3 of the entire bush. This will encourage a nice rounded shape for new growth.
If the bush needs to be further reduced in size, the process can be repeated next year.