Photos to speak for or enlarge on what we've written
Butterfly bush (Buddleia
Shrub type "groundcover" roses
('Knockout'): Don't be shy when pruning roses!
Panicle Hydrangea (such
as 'Tardiva', 'PeeGee', 'Limelight', 'Pinkie Winkie', 'Little
Above: They were cut to the ground last spring, grew to 5'
and bloomed from August 1 to the end of September on attractive
Below: New branches came from 'way low on the plant. Stubs
(arrows) just clutter the base and make the next year's cut
Be tough when your prune a rose
We demonstrate on the miniature 'Red Cascade'. (Miniature means
it has small flowers and leaves and is about 6' overall rather than
We leave it with just a few well positioned, vigorous young
canes. Blooms will come this summer on the side branches that
sprout from these canes. Throughout the summer we'll keep those
side branches deadheaded and they'll keep producing more
Below: Before the cut, after one cut to remove the oldest
cane, the one-cut base with an arrow marking the stub left from
that cut, and after final cuts to shorten and train remaining,
young vigorous canes.
Above, left: When the rose leafs out the horizontal
orientation causes it to break -- develop side branches --
even low on the cane (arrows). So there will be bloom all along
this cane, not only at the top.
Above, right: Snap off or rub out new canes to thin or
eliminate excess new growth.
"groundcover" roses: Pruning roses 101
We demonstrate on two individuals of the variety 'Knockout.'
Below: We first cut out the oldest canes and weak canes
right at their base, then cut the remaining canes to
remove the twiggy tips (we don't want thin, weak stems to be the
lead growth since the bloom-bearing side branches they would
produce would be even thinner).
This planting of 'Knockout' had been pruned previously only to
shear the tops. As a result, unproductive old wood had built up,
crowding the center and shading new growth. In the future on this
pruning regimen, husky new wood will be more plentiful. There may
be eight canes remaining on each shrub after its spring cut, rather
than only four or five.
Below: Don't worry.
They grow back. This is the same planting later that
More: Pruning other "shrub" type roses and old roses, in What's
Coming Up 88 .
Hydrangea (H. paniculata)
You may know this plant by a variety name, such as 'Tardiva',
'PeeGee', 'Limelight', 'Pinkie Winkie', 'Little Lamb'. These shrubs
have conical clusters of white flowers after mid-July; the flowers
may age to pink.
Below, left: Length of stem between the arrows is all new
wood. That much grew after last spring's cut-back.
Complete cutback is not a necessity for these shrubs; we cut some
individuals only to remove old wood. However, this individual does
need a hard cut. That's because its species has the potential to
reach 10-12 feet. We can't enjoy it in this spot unless we cut it
This shrub's bloom was not heavy last year, probably because
spring came very early and stayed far ahead of all of us: By the
time we got to this shrub per our normal schedule on April 1, it
was not only not dormant but had been growing for almost a month.
What grew back after our cut developed a little more slowly than
usual, and was not so ready to bloom by summer's end.
This year the shrub and we are in synch. We expect it will not
only grow back to its usual height from its stubs, but have more