Philadelphus lewisii ‘Blizzard’ (Blizzard mockorange) is a compact and hardy shrub that blooms reliably in part shade and a cold climate. It produces loads of pretty flowers every year, with a delicious scent. ‘Blizzard’ is my favourite shrub for the shade in a northern climate.
‘Blizzard’ is a more dwarf shrub than the standard mockorange, with a better shape. Philadelphus virginalis (mockorange) can have a rangy habit, with long branches sticking out at angles. However, Philadelphus lewisii ‘Blizzard’ has more of a rounded shape, with a compact form and good branching. This makes for an attractive looking shrub, even when it is not blooming. The smaller size, about 1.2 m (4 feet) tall and wide, makes it easy to fit into a mixed garden bed.
However, ‘Blizzard’ mockorange really earns its space in the garden in early summer when the snowy flowers cover it. The pure white blossoms are gorgeous, with four simple petals, and a cluster of golden anthers in the middle. ‘Blizzard’ has been a very reliable bloomer for me. This hardy shrub flowers every year, even after a cold winter, or late spring frosts and snow.
In the photo above, you can see how the mockorange flowers are clustered at the end of every small lateral branch. The shrub is bejewelled with the beautiful blooms, for almost three weeks.
The mockorange scent is wonderful, and one shrub manages to perfume my patio when all of the blooms are fully open. The fragrance is the icing on the cake for the pretty blooms. My Philadelphus flowers from the end of June to the middle of July in zone 3. The lilacs have finished by then, so this is a good successive shrub for delightful garden scent.
This is one of the few northern shrubs that you can depend on to give a good flower display in the shade. Mine is sited to get some early morning sun for less than a couple of hours, yet it puts out a full set of blooms.
I highly recommend Philadelphus lewisii ‘Blizzard’ for its reliable blooming in a northern climate, shade tolerance, attractive shape and lovely fragrance. You can read more information and see more photos about this mockorange in this post from last year.