Flowers January - May on shoots produced the previous summer.
No need to prune unless it is too large, then cut-back after flowering.
Group 1 is made up of Clematis alpina cultivars, C. macropetala cultivars, C. montana cultivars and other early flowering species forms. These forms bear flowers on growth produced the previous year, from winter through to late spring. Forms are deciduous unless otherwise stated. All Group 1 listed varieties are small flowered.
This group of Clematis should only be pruned if it is too large after flowering, removing any dead, diseased or damaged growth. Do not overprune, simply trim back to fit the available space, if required. A light trim will encourage production of new growth to flower the following season.
The following varieties belong to Group 1:-
alpina types
armandii (evergreen) types
Carmanni Joe
cirrhosa types
Forsteri
macropetala types
montana types
Group 2
Flowers May - June on new shoots produced the same year.
Prune - early spring
Group 2 is made up of large flowered cultivars that flower through from late spring to early summer on sideshoots from the previous years growth. They will also flower mid to late summer on the tips of the current years shoots. These are deciduous, and you should beware of hard frosts that may damage early top growth, however this will be replenished and should not affect the plants flowering season.
Pruning for Group 2 should be done before growth begins in early spring. Simply remove dead, diseased and damaged growth and trim all remaining stems back to the nearest strong bud. These buds then create the framework of second-year shoots that produce sideshoots that will flower in late spring and early summer. The young shoots then bear further flowers later in the summer.
The following varieties belong to Group 2: -
Anna Louise
Alabast
Arctic Queen
Barbara Jackman
Beauty of Worcester
Bees Jubilee
Belle Nantaise
Belle of Woking
Benedictus
Blue Moon
Captain Thrilleaux
Carnaby
Countess of Lovelace
Corona
Crystal Fountain
Daniel Deronda
Dr. Ruppel
Duchess of Edinburgh
Edouard Desfosse
Elsa Spath
Fair Rosamond
Fireworks
Fujimusume
General Sikorski
Gillian Blades
Guernsey Cream
Gypsy Queen
Henryi
H.F. Young
Ivan Olsson
Jackmanii Alba
Joan Picton
Josephine
Ken Donson
Lasustern
Lawsoniana
Lady Northcliffe
Liberation
Lilacina floribunda
Lincoln Star
Louise Rowe
Luther Burbank
Marie Boisselot
Miss Bateman
Mrs. Cholmondely
Mrs George Jackman
Mrs. N. Thompson
Multi Blue
Natascha
Nelly Moser
Niobe
Pink Champagne (Kakio)
Pistachio
Proteus
Ramona
Royal Velvet
Royalty
Ruby Glow
Scartho Gem
Sealand Gem
Silver Moon
Special Occasion
Sugar Candy
Sylvia Denny
The President
The Vagabond
Vino
Violet Charm
Voluceau
Vyvyan Pennell
Ville de Lyon
Wada's Primrose
Warsaw Nike
Westerplatte
Will Goodwin
William Kennett
Group 3
Flowers July - October on new shoots produced the same year.
Prune - early spring
Group 3 is made up of late flowering, large or small flowered cultivars, late flowering species forms and any herbaceous species or cultivars.
These forms flower on new shoots produced in the same season, and flower through from summer to late autumn, and are deciduous.
This group should be pruned during early spring before new growth forms. Remove nearly all the previous years growth back to strong buds, 30cm (12 inches) above soil level.
The following varieties belong to Group 3: -
Small Flowered
Alionushka
Arabella
aromatica
Asao
Chinook
Durandii
Etoile Rose
flammula
flammula Rubra Marginata
Gazelle
heracleifolla types
integrifolia
Medley
orientalis
Pagoda
Savannah
tangutica
texensis types
rehderiana
Victor Hugo
viticella types
x eriostemon Hendersonii
x Fargesioides Summer Snow
x jouiniana Praecox
x Triternata Rubra Marginata
Large Flowered
Ascontiensis
Blue Boy
Charissima
Comtesse de Bouchard
Dorothy Walton
Ernest Markham
florida types
Hagley Hybrid
Honora
Huldine
jackmanii Superba
John Huxtable
Lady Betty Balfour
Madame Baron Veillard
Perle D'Azur
Petit Faucon
Prince Charles
Rahvarinne
Rhapsody
Rouge Cardinal
Sunset
Victoria
Warszawska Nike
Amendment to Clematis video information:
Contact details for Clematis Society are as follows:
