Agriculture Reference
In-Depth Information
Table 4.14
Climbing roses
Climbersthatfloweronce
Alberic Barbier
Albertine
Altissimo
Clair Matin
Constance Spry
Dorothy Perkins
Felicite Perpetue
Gloire de Dijon
Lamarque
R.leavigata
R.dupontii
Rambling Rector
Wedding Day
Repeat-floweringclimbers
Altissimo
Clb Gold bunny
Clb Iceberg
Crepuscule
Dublin Bay
Golden Showers
Lady Hillingdon (Climbing)
Mermaid
Mme Alfred Carrier
Nancy Hayward
New Dawn
Pierre de Ronsard
Sparrieshoop
Twilight glow
Figure 4.46
The spent flowers can be left to overwinter
on the bush. Not only do they add a different texture to
the landscape, they can protect the new buds from frost.
the same manner are
Hydrangea serrata, H.
aspera
and
H. quercifolia,
known as the
lacecaps and the oak leaf hydrangeas.
These species flower from buds that were
formed the previous season. Like most shrubs
that flower once a year, they can be cut back
after flowering; however, the beauty of the
faded flowers will be lost (see Figure 4.46).
looking more like weapons than flowers. The
choice belongs to the pruner: the harder the
pruning, the bigger the flowers.
Timing
In extremely cold climates, pruning is not
undertaken until well into spring so that the
new growth will not be cut down by frost. The
flower heads can be left on the bush to shelter
the new buds and subsequent growth. This
has the added advantage of providing a
sculptural winter presence. Those in mild
climates can prune in late winter.
There are two pruning methods for
hydrangeas depending on the species you are
growing.
Hydrangeas:groupone
This group includes
H. macrophylla
and
cultivars; the mop heads or hortensias, the
most popular of hydrangeas. Also pruned in
